Personally, I'm not a huge FPS fan even though I fall into the mainstream demographic for it. However, having said that I do own a few FPS titles, mostly for my 360, however after purchasing MW2 for my PS3 I will say that MAG will be a day one purchase for me as I find the controller for the PS3 to be (to me anyhow) much more FPS-friendly.
(Plus I need something to tide me over until Heavy Rain, WKC and FF13 come out)
Unicorns ARE real - They are just fat, grey and called Rhinos