Ground Zero. Airball field has grass :) good for sliding on.
Ok. The airball field is good dont get me wrong but I dont like the whole idea of going to slide into the snake on concrete. The ground is SOOO hard not to mention all the rocks that are there. The tires field is a good quick paced field. Also the town is pretty goodbut you can get paranoid in there REALLLY quick with so many places to hide and wait for some unsuspecting victim. Vietnam is a good field with a lot of people (mainly the rec's), but for the few of us who tournament play and need the airball practice these fields offer a diversity to it. Now I havn't played on the trenches field, but overall the experience is good for people learning to play paintball and they are decent on their prices and the staff is helpful.