New
#11
Google "advantages of hyper-threading" and see if the reasons apply to you. The i5 lacks hyper-threading. If my applications could take advantage of hyper-threading, I'd go with i7 in your situation unless budget was a major consideration.
On the other hand, you may do something that can take advantage of hyper-threading only 2 hours a month--in which case maybe it isn't worth the premium. At 2 hours a day or 2 hours a week, maybe it is worthwhile. Purely a personal decision.