The ending of AC2 made me LOL. Part 1's ending felt intriguing. Made me want to continue on to get answers. The answers Part 2 offered felt pretty ridiculous, if I'm to be perfectly honest. The gameplay was top-notch, but I didn't even want to bother with the series after that.
Kind of odd you had the opposite reactions.
If I could recommend a PS3 game, well, reading this thread reminds me of how lackluster this gen has been. I guess Skyrim, although you're better off with it on computer. And the Rockband series always did it for me. But if you can play real guitar at any capacity or desire to learn, definitely get Rocksmith instead.