I own all of the Sony systems and some good times can be had with them, but I personally think Sony is the weakest gaming company out there myself.
Saturn is better than PSX.
Dreamcast is better than PS2.
X360 is better than PS3.
New gen is too early to say anything, but right now I have all 3 systems, and PS4 is the least played.
Someone else asked about the fake d-pad, and yes, it is there and seems even more separate than usual with the PS4. Maybe it isall in my head, but the buttons seem more raised than usually, so it is hard to slide your finger around the pad, say you needed to do a half circle for some reason.
I apologize for the double post.
Saturn is not better than PSX. (At least not comparing US titles) Dragon Force (awesome) and Saturn Bomberman (great) help, but really, what else compares favorably to the PS1? (Don't say Panzer Dragoon Saga, because most people, including me, never had the chance to play it.)
Dreamcast may have more exclusive titles that are long-term more fun, PS2 has all the game compilations! This is a tie and I currently have both set up. (I have both PS1 and Saturn set up as well, so maybe that's a moot point) If Bleemcast came through with their initial expectations that all/most PS1 games would be playable via Bleem, maybe that would have swayed my decision. I love playing GT and MGS on the Dreamcast.
XB360 is definitely better than PS3 just because I never bothered to pick one up. There weren't any console exclusives that convinced me to pick one up. XB360 had Mass Effect, Forza Motorsport, and all those lovely shooters (and a ton of great indy xblive games, such as Insanity-x!)
Yeesh, this turned into a long, ranty post. Sorry.