I agree with you that TT is awesome!
theelkspeaks
NA
Level 30, Hovering in the Bronze II-IV range in soloqueue, on a Bronze II 3's team with jijo and burd (just getting started - 3 wins 2 losses) and occasionally play unranked 3's by myself. Also play some dominion and hang out in the DD chatroom a bit.
Current main champion pool
3's - Ziggs, Udyr, Mundo. I can pretty solidly hold my own in TT, especially if I get Ziggs.
5's (from best to worst in each role of champions I regularly play)
ADC (best role) - Tristana, Lucian, Miss Fortune, Ashe
Mid - Ziggs, Syndra, Heimerdinger, Akali, Karthus
Top - Kayle, Amumu (as a counterpick), Malphite, Jax, Dr. Mundo
Support - Sona, Nami, Morgana
Jungle - Udyr, Amumu, Vi, Jarvan IV, Malphite
Updating my champ pool from this post.
3s - Ziggs, Syndra, Malzahar, also Udyr/Mundo/Maokai if tanks are needed
Mid (best role) - Malzahar, Syndra, Ziggs
ADC - Tristana, MF, Lucian, Jinx
Top - Maokai, Malphite, Gragas, Shen, Amumu
Jungle - Yi, Udyr (Tiger), Amumu, Shen, Malphite, Vi, basically any tank
Support - Nami, Morgana, Braum, used to main Sona in season 3, haven't played her all that much lately, especially since the rework just happened. The support items and vision rework, in my opinion, made Sona a lot harder to be successful with (at least for me).