Don't buy now. You'll kick yourself in June when the new processors come out. I buy a new computer every 2 years by following Intel's classic Tick-Tock strategy when a new architecture in introduced every other year. Haswell is a new microarchitecture with a tested manufacturing technology and is considered a Tock in the launch schedule and should come out in June of 2013, at the latest. The Tick is when the existing microarchitecture is enhanced, but the Tock is with a whole new micro architecture.