System Use: I don't do a whole lot but want a top-end machine. I play a few games (World of Warcraft, Starcraft 2, Diablo 3 when it comes out). I don't do video editing. And I do some graphic editing (Photoshop). I am just getting into water cooling and I've been using AMD CPU's for 10+ years and want to get into Intel OC'ing.
I would reccomend going with the one of the new Sandy Bridge processors if your looking to O.C.I would suggest getting the sandy bridge i5 over the sandy bridge i7 to save some money because theirs isn't a huge difference between them both perform about the same when it comes to gaming.With the proper cooling you can get around 4.5ghz ez with one of those new Sandy Bridge's.I've also heard it's realativly ez to get past 5ghz but you will need water cooling for that.
Can't really suggest a mobo because i'm not to familar with Intel mobo's as i'm more of an AMD guy myself.
Do you already have a GPU or are you looking to get a new one?