I have an extended track full door. I may have preferred the easy-entry, or mid-entry for getting in, but I like having the full cage and full doors when driving.
In the end, I wouldn't have changed anything but gone with an LSJ instead of an LNF. I originally hated the look of the cage, thinking I'd only like the street version. I ended up buying the track version for safety reasons and had only ever seen two street version goblins before, never an in-person track. I'm pretty happy with the looks and feel, but track is difficult to enter...
Edit: As Kyle said below, having an option for a roof and rearview mirror was another big positive.