Oh yeah, MGS4 was an epic movie.
But no, the gameplay was fun as hell, I liked the new revised movement and weapons system. I'm just sad we didn't get to use Snake that much in the series :< I mean, in Metal Gear 1 + 2 he's a little 16 bit 2-D sprite. Metal Gear Solid was the pinnacle of sneaky-snake-iness, but even then he was kind of old as he had retired before the game started. MGS2 we're teased with a version of Snake who can be rollin' them bitches, and then we're stuck with Raiden, who's enormously gay throughout MGS2 and then a sudden uncontrollable bad-ass in MGS4. MGS3, we play as Big Boss. MGS4 Snake is groaning about his sciatica half the time you actually play.
Anyways, IMO the PS3 was launched kind of late in relation to the other seventh-generation consoles. The 360 had a big head-start as far as sales and development goes, but then a lot of cross-platform games came out which nearly leveled the playing field, and then the PS3 started pulling all these exclusives out its ass.
Multi-purpose wise, I also favor the PS3. Blu-ray is cool, but the other aspects like storing music and small videos is also awesome, and I think that the current PlayStation Network is also doing pretty well. I don't mean online, I mean the Sony equivalent of the XBLA, being able to download things like PS1 games.
As for online, community-wise, there's a little less people, but thankfully most of them are a lot more mature than your average Halo-teabagger. There also isn't any lag (from what I've experienced, anyways) and the online is totally free, which is also awesome.
All in all, if you're a rich-ass mofo, get both, because there are a lot of cool exclusives on either console. The 360 costs a bit less, but the PS3 is a bigger value if you can afford it.