Far as gaming performance, from the reviews I have read, the i7 and 1090 are about equal in multi-threaded games such as BFBC2 with differences being less than 2 FPS between them. Far as the intel vs. AMD, generally AMD will make it easier for you to upgrade later on vs. intel. The biggest advantage with intel is the 8 virtual cores will help with certain multi-threaded multimedia apps and number crunching. Also, if you were planning on SLI or XFire, it limits your mobo choices depending on whether you go intel or amd. With my rig, i had a little more limited selection of boards to do nvidia sli with AMD. Just something to keep in mind when choosing a processor, look at cost of boards and compatibility.
Personally I say go with AMD, but after viewing all the fanboyism that is soon to come, the choice is yours.
PS
Just from personal experiences, I have found it easier to OC AMD chips vs Intel.