Wireless Security/Spot Light Recommendations

I need some additional lighting around my house and one of the more tricky spots is above some windows. It seems putting up a wireless light would be more cost effective. This is also the light for my grill area so it'd be nice for it to be enough light to be able to cook at night.
 
I've been looking around a lot but haven't really seen any reviews on wireless lights that are consistently good reviews. I don't think solar will really work in this spot so that's out. I've looked at the Mr Beams lights and they seem to be liked but there are still a lot of bad reviews out there.
 
Can anyone recommend a good brand? Or would it be worth running power to the location? 
 
Thanks in advance!

I'd run power.  If you don't want to do the whole conduit/120 vac hassle, consider low voltage (landscape lighting).  Just make sure you use the correct insulation type (UV resistant for outside).
 
I recently installed some LED low voltage lighting from both Lowes and Home Depot and really like it (run about $35 per light, though these were for landscape applications).
 
There are a lot of different types out there, some are even designed to illuminate decks.

Here I ran 120 VAC lighting and power adjacent to the grill on the deck (and a natural gas line). 
 
I use a 120VAC halogen lamp over the grill.  I use the electric for outdoor frying and the rotisserie motor for the grill.  The grill is attached to the deck.  The grill also has one burner for cooking stuff on it.
 

 
I installed a UPB switch in the box for the electric and ran new wires for a second switch to the lamp switch on the deck to one kitchen 4X4 box which was just electric and now a switch and electric.
 
I want to switch the outdoor 120VAC coach lighting to similiar in LED but nothing is offered yet which I like.
 
I do also have LED lighting on the deck. (~15 or so). (primarily little mini sconces that face down) and on two sets of stairs to the deck.  It is one landscaping lighting zone of a few today that are LED lighting.
 
The sconces were expensive if purchasing one at a time.  I purchased them in bulk which made them a bit cheaper.  The were originally made for 7 watt regular incandescent bulbs.  I installed 1/2 watt LED lamps in them.
 

 
You can also purchase wireless remote LED lamps with batteries for grill illumination.  I have seen these for less than $50.

BSR, I considered the low voltage but I didn't see anything that would be bright enough for security. I think you're right about power though the more I research things.
 
Pete, That actually is a great plan. My grill is directly on the fence and it would be nothing for me to run an outlet to the fence post and put a hanging lamp up with a motion detector. I have to run a gas line as well, I've been avoiding that like the plague.
 
Thanks for the suggestions!

I just used THIS in an application for the front of a gated community and it is very bright.

That looks perfect for side yard and might keep the light from blasting the neighbors.

Yup; old home deck ran a plastic flexible PVC line for gas.    It was a static connection and I did have a couple of issues with it in some 30 years of using it.
 
In current home ran outdoor black pipe out to a quick disconnect with shut off valve (well too in the home ingress pieces).  The grill came with a flexible gas line with the other side of the quick disconnect.  Its been now some 10 years and doing fine.
 
The HV box adjacent to the grill is just an outdoor 4X4 box (using outdoor conduit) with a weather proof cover over the switch and outlet.  The overhead grill lamp is connected to the 3-way configured switch.  Initially this switch was an X-10, then Insteon and now UPB.  The kitchen by the window 4X4 box was just a single outlet with a single mudplate on it.  I ran a new HV wire  / conduit from the outside box to the first in-line box to the kitchen outlet, put in a double mudplate (PITA) with same old outlet plus another UPB switch.  There is another HV coach lamp on the deck (well matches the rest of the home) with a UPB switch connected to it.
 
I redid a bit of the cedar trim on the deck.  Initially removed the cap and put in the LV 12 guage wire along the top of the railings and replaced the cap.  The LV wires are hidden.  They run into the home to the multizone / DIN 12VDC powered LED section.  (mutiple LV 12VDC setups for outdoor LED lighting). 
 
PIR / CCTV / other LV wires run along another chases.  Audio subzone is just using Russound outdoor speakers.  They are mounted on brick.  One speaker going into the home using a chase next to one kitchen speaker zone into the basement.  The other on the brick wire is hidden by matching cedar deck trim.  Lighting / security stuff is using multiple events driven by whatever.
 
I also had a water spigot installed on the deck (on the brick wall) for watering plants when doing the deck (water and gas lines installed at the same time). 
 
The multiple chases going into the home under the deck were done before deck was completed.  That said I did make a little access panel out of cedar that looks like the deck (well actually done up by the deck wood crafter / installer). 
 
In a quickie syopsis; all of the outdoor lighting security events are switched on and off by UPB switches which are controllled by the OPII panel with outdoor security  "do whats" also connected to the panel.  There are no self contained non connected autonomous sensors configured (well if that makes any sense?). Now most / all CCTV is using IR LED lighting; regular lighting turns home into "daylight" during "nightime" sometimes.  Lately a coyote and a cat has been triggering stuff at 3 AM.