If you had the guts to buy somethign as abominable as Street fighter Alpha, you might want to get the Street Fighter 2 movie, which is a thousand times better (It is REAL Street fighter, if you get what mean)
Maybe you'll want to check the Fatal Fury OAV's as well, but I suggest a rent before you buy those.
After Vampire Hunter D I'd highly recommend as well Vampire Hunter D: Bloodlust, which is awsome, one of my all time favorites.
Again, if you like martial arts related, I would also suggest "Suikoden" (it does have very little in common with the RPG's, although the essence is the same), it's a very short movie (I don't think it's longer than 45 min) but the quality is pretty cool, the action is awsome, and it really leaves you wanting a second part.
If you want to laugh like hell, you should check Golden Boy (although that's like 6 movies, 30 min each)
Oh, and you did not specify if you actually had both Trust and Betrayal DVD's, just wondering ...
(first anime DVD's I ever bought )