This is an interesting thread, thanks for posting!
I'm generally the opposite, pretty much a full DC guy (Superman being the fave) and no Marvel since quite a long time ago. However, I have been wanting to dabble back in Marvel a bit, part of which is specifically due to PKJ. I've loved all the stuff he's put out between Action Comics, Last God, 007, and Aliens. I'll be following him over to the Incredible Hulk when that comes out.
I've also been wanting and starting to get back to X-Men, who I was always partial to. It's been so very long since I've read an X book though, it seems kind of intimidating to jump back in on that 'verse at the moment. I'll be getting the Storm mini but as for current timeline books I have no idea what's going on. Seems kinda convoluted. Plan was to start with the standard X-Men book and go from there. Seems like a decent enough jumping on point with the Fall of X stuff about to happen...
But yeah, I think if you've been exclusively reading one publisher or another, its sometimes hard to go back simply from a story standpoint because they can get pretty involved and complex, esp if you've been away for a while.