Meh, I'm not liking the i5's. Sure, cheaper, but a whole different socket? Really? 1366 is the socket that should stick around this time around, it's not like how 478 came first, and 775 came out before it died, or 754 to 939 in the same vein. Now they're coming out with a socket that basically limits the user to never be able to upgrade to the high end unless they buy a whole new motherboard.
On a budget, i5s will be fine I suppose, and true, your average user upgrades once every few years and something new will be out by then...but I still don't like being limited.