I've never actually understood the "Live is so much more reliable than PSN" stance. I swear, that's just rumor or some shit that got adopted by fanboys that was pretty much forced into fact through repetition as if it were. Having used both services rather extensively, I can safely say that PSN is ultimately no worse than Live. Anybody that has used Live for more than a year can tell you it has its fair share of issues that might make a person think twice about dropping the money for a year of Live, you know, if it weren't for the console losing 90% of its functions without the service.Well, I'm more inclined to get one now. I went with the 360 last gen, and I'd like to continue with Xbox. The controller design is the best out there, Xbox Live is a lot smoother and reliable than PSN (From what I've heard), and I'd like to continue using my account and whatnot.
It's still too early to decide though, and I'll wait to see what gets announced, with both games, and features for the system itself, leading up to launch.
I'm thinking the opinion primarily stems from the fact that Live costs money, whereas basic PSN does not, so clearly Live must be better. Kind of the consumer idea that costs more is equivalent to better quality.