An LQ (liquidator) will be good for you, but a SWG is more convenient as long as you don't have stone coping or decking. I found my pool was too large for the LQ to keep a week's worth of chlorine in reserve.
One thing about the LQ, if you go that route make sure you get the upgrade kit (all the valves and such are larger), and make sure your TA and pH are in proper range. If TA is out, you may get "white stuff" in the LQ. It seems to be a calcium precipitate in the water and is eliminated by bringing TA into spec usually. For me, it required both getting TA correct and going to 50ppm borates.
If you go salt, stone can be an issue in Texas. But, you will hardly ever have to haul another chlorine bottle. You will have to watch pH, as for most people it will rise as the SWG does its job.
I installed my LQ on a friend's pool, about the size of yours, and it's been working great for him.