Well, for an i7 the 920 is a great price especially if you consider overclocking it. As for the LGA 1156 i7s, yeah I think they are priced a little high
. Still, the i7 is better (referring to the LGA1366 versions), but AMD is offering you a great price/performance ratio for gaming
. I see it as just a question of what you want to spend. On the lower end of things I say AMD, towards the upper middle I lean towards the i5 with a good P55 board, and on the high end an X58 board and the i7 is the way to go.
Personally I stay on the AMD side
. While I was thinking of switching back when they kept changing sockets (940, 754, 939, AM2) they have recently proven to be more upgrade friendly. Their decision to allow AM3 CPUs on AM2+ boards in particular makes me happy as evident by my current 955 BE