I've been revisiting the Silent Hill series these past couple of weeks. Beat SH1-3 and I'm starting 4 today. I will play all of them except Shattered Memories, because I don't feel like setting up the Wii and I played that one recently anyway.
I can never decide my favorite between 1, 2 and 3. SH3 is the most fun gameplay-wise, while 2 has the best story and 1 is still the scariest, blocky PS1 graphics and everything. To me those are their greatest strengths, although that's not to say they don't deliver where the other excels.
Thought I'd remember less of these games considering how long it's been, but I guess I've played so much of them in the past that it's hard to make them feel fresh again. It's no big deal, though, I'm having a great time.