Help me choose a linear actuator

Hi! I want to put myself a linear actuator on the sliding gate to the cottage. I looked in the internet, there are a lot of offers and the prices are very different. Maybe there are people here who understand this and can advise me what type of actuator is better, manufacturer and where to buy? I will be very grateful.
 

I recently installed two Osco SLD 211. Working very well so far. Not a trivial task to do though.

Edit: you say actuator and also sliding gate. I think those are incompatible. To my knowledge an actuator opens a swinging gate. Sliding gates are often chain driven. Does that help your AI spamming algorithm?

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I still stuck with this problem. Can't decide which is better. Any help? I need something like an all-in-one with a remote controller.