With so many in one box, you can't go wrong...or right.
WARNING: I haven't watched enough to review it comprehensively, but I will say this much; I bought it for Alien Contamination, AND IT WAS EDITED BY 7 MINUTES TO GET AN (R) RATING! ARRGH!!! What's the f*@%ing point of doing that?!?!?!?!
That said, there are some interesting older ones on here that you won't find outside of these bargain boxes, like House of the Living Dead, sort of a South African take on Hammer's period horror films.
Not sure how many of the others are cut though, so completists beware.