TKL is probably my favorite, but not a strong one. I like TKL layout, but I also like the layout of Leopold's FC600* keyboards, and those 60% layouts with additional function row keys along the left margin. I could possibly get into 60% keyboards if I can get used to using WASD as arrow cluster with a modifier (I use navigational keys often). I don't even mind full-sized boards if they have skinny bezels, but would prefer smaller sized ones.
75% layout keyboards, like KBT Race, would probably be the most logical for me, but I don't particularly like how they look.