I like both franchises but i really didn't like the direction neither was going in 5. But considering how Namco Bandai handles Tekken 7 and DBFZ i will 100% get SC6. Will reserve judgment for DOA6 since if they go the $1000+ DLC route again, i am out.
Soul Calibur with its character creator is almost as much if not more fanservice than DOA so they already have that covered.