Kits: I started playing full ring ($5NL) until I got kicked off the beginners tables at Party, then went to Paradise and played about 10K hands at 10NL (full) and 25NL (full) with reasonable success. I too was always curuious about playing 6-max (5-max at Paradise), but took the leap after Party gave me $30 to screw around with and I was constantly running into nits at full ring. From then on I've played (almost) exclusively $25 5-max (at Paradise) and love it. The most important thing I read about 6-max is that you can really take advantage of the weaker players. I've also found that I've gotten a lot better at reading hands, managing pot sizes and aggression. I hihgly recommend giving it a shot and seeing if it's for you. (At first only try 1-2 tables so you can really give it your all)

Good Luck.