I play regularly on 3 different tables: un-raised, 3/4" raised, and 1 1/2" raised.
Easy choice. I prefer the raised ones EVERY TIME, ESPECIALLY if I have a lot of chips in front of me. Angle of forearms resting and chip shuffling so much more comfortable sitting for long hours.
The key is to have the right chair at the right height, along with allowance for feet planted at correct height as well. Most raised tables are simply too high (mainly the base) relative to seat and foot rest height. So it's important to be sure the table base isn't too high depending on the chairs you're intending to use.
Also, we always have a dedicated/volunteer dealer with a curved dealer cut out area (area without rail) at our games, so the dealer is comfortable dealing for long hours. If we only self-dealt, the higher raised rails are obviously less comfortable and not ideal.
The other good thing about raised rail tables is that you can install the deeper 2-stage "marine" cup holders (much better than the standard jumbo 2-stage) since the extra height allows it.
Having said that, I've also played on tables that have much higher rails.. 3"+ ... TOO high IMO, which isn't comfortable either. I like the 3/4"-1 1/2" raised height. And as others have already mentioned, raised rail tables look so much nicer and puts me in a seriously fun playing mood!