While I haven't had a chance to use anything outside of the Vertex line, I love mine. I don't know if OCZ still has the same advantage as they did in the early days with the fully unlocked Sandforce firmware. A 120GB is a great size, that's going to be big enough to put games and programs on whereas the 64GB would be tight (depending on how many games and programs you have).
IMHO, OCZ has one of the best rebate programs for Canadians as they still will give out a check, rather than a prepaid card. I've never had an issue with getting my rebates from them, though I'm pretty thorough to ensure I get them.