Admittedly, Dragon's paintball fields are the only ones I've ever played at, aside from playing at friends' houses and other non-established fields. Nevertheless, having played at Dragon's for over five years, I can definitely say that his fields suit my style of play.
Since Dragon caters to both gunmen and paintballers, he has a 100-yard shooting range for any legal firearm you want to bring out there. This runs perpendicular to the road, with a large berm on the west side of the road. The paintball fields themselves are on the east.
There are five paintball fields in all, each separated by a berm. Field one is certainly interesting, as it provides for a close range combat effect. I haven't played very much in the other fields, but I can tell you that each field is covered with wooden slats, huge tires, old cars that Dragon has filled with bullet holes, trenches, mounds, and various bunkers.
I believe the best field is field five. It seems to be the largest, as well as the most diverse. When you first enter the field, the ground is relatively flat and there are some decent bunkers. The further in-field you go, the rougher the terrain gets until you find yourself in a series of trenches, holes, and ditches. Next to all of these are mounds, perfect for body cover at an angled shot.
All in all, I've had very few bad experiences with Dragon's fields. I can't say that his rental gear is stellar, as CO2 problems seem to be the order of the day at times, and a faulty mask that was rented to a friend of mine is the reason my friend lost the vision in one of his eyes. To be fair, the person who shot my friend was playing with doubled PSI levels, so at a normal impact the mask would've more than likely withstood the blow.
Dragon caters to almost anyone, and his prices are pretty fair. The fields are better for small groups (less than ten), but I've played against thirty on them, and we did alright; there were certainly quite a few "friendly-fire" shots that day, though.