I own a 360 and a PS3 and tend to do the majority of my gaming on the PS3 these days. This is mostly down to me being underwhelmed by Microsoft's exclusives over the last few years, Alan Wake being the only one that actually interested me. In contrast, Demon's Souls, InFamous 1 and 2, MGS4, Heavy Rain, God of War III and many more have really floated my boat.
Funnily enough when the PS3 first launched, it was the other way around. It probably has something to do with MS focusing too much on Kinect and not enough on great exclusives like when the 360 first launched. Still, the Playstation Store doesn't have anywhere near the level of choice of XBLM at the moment. However, it does seem like Sony are actually trying to rectify this by funding independent game development and adding features such as Steamworks. On the whole though, it really is all about if you fancy enough of the exclusives on PS3.
Funnily enough when the PS3 first launched, it was the other way around. It probably has something to do with MS focusing too much on Kinect and not enough on great exclusives like when the 360 first launched. Still, the Playstation Store doesn't have anywhere near the level of choice of XBLM at the moment. However, it does seem like Sony are actually trying to rectify this by funding independent game development and adding features such as Steamworks. On the whole though, it really is all about if you fancy enough of the exclusives on PS3.