I'm making the plunge into HDTV between now and Christmas, with The Big Turnon set for Christmas Day. I've selected the Samsung LN-S4696D for a lot of reasons and it's worth a look by you. You should note that the quoted screen sized are DIAGONALS so that a 46 inch screen like the one I'm getting would indeed fit on your 45 inch wall - the LN-S4696D is exactly 44.4 inches wide.
http://www.samsung.com/Products/TV/LCDTV/L...=Specifications
Important things I looked for that the LN-S4696D has:
* integrated digital tuner AKA Digital Cable Ready (DCR) (without this you're depending on the cheap set top box from your cable company to decode your picture and they're interested in maximizing their profits, not giving you quality electronics that will present the best picture to you)
* integrated ATSC tuner (not the same thing as above) to pick up over-the-air HDTV
* true 1080 layout, 1920 X 1080 pixels
* 6000:1 LCD contrast ratio
* accepts AND DISPLAYS 1080p signals, the highest level of resolution (futureproof)
* IEEE 1394, USB, Personal Computer RGB inputs
Plus if you see the LN-S4696D in Circuit City, it is BEAUTIFUL. Much better than my original DLP choices which had bigger screens but more washed out colors with jagged edges that you had to have your head Right In Front Of The Screen to see correctly...
It costs around $2700 including shipping when ordered on the internet. This compares for example with the new but MUCH LESS CAPABLE 46 inch LCD from Winbook at $1700...
http://www.geek.com/news/geeknews/2006Oct/...61030039803.htm
Good luck!