LeBanner is my favorite hw/super hw kickboxer. His mma experiance isnt too much right now, he did beat Yoshihiro Akiyama, but the huge difference in size had alot to do with that one. You should have seen how quick he rocked Gary Goodridge at the Japan final elimination round in late 2005! He has been working on his ground game with Abu Dhabi champion Dean Lister.. so its not like he hasent been rapidly learning from one of the best.
http://www.so-net.ne.jp/feg/k-1gp/ctop.htm
Kickboxing 49-10-2 with 39 wins via KO, 1 No Contest
Boxing 5-0 with 4 wins via KO,
MMA 2-1-1