Too many votes for RE5 - so I'm voting for Silent Hill again :)
BTW I do like RE games – but for me they're just fun actioners with some jumps - SH games (particularly 2 and 4) are truly disturbing on a psychological level. As I read earlier in the thread, you almost have to force yourself to play through a Silent Hill…
However, in terms of game mechanics the better RE games are probably superior from an actual ‘playing a game’ and having fun point of view
Try to be reasonable... its easier than you think...