i have TvC and so far i'm loving it and it's pretty awesome i must say especially with a wiimote you don't need to do some button mashing,etc.
but what VC fighting games can you recommend? are they free?
No they are not free, and they shouldnt be either being the classics they are. Samurai Showdown and Fatal Fury also have some installments on VC. Just go to your nintendo shop channel, go to VC, then catergorize by genre, then pick fighting.