I was one of the original MBA owners, one of the fist to own the 1.6/80 then switched to the 1.8/64SSD. So this is based on owning all the MBAs to date. I bought the 1.6 MBA to use as my only mac, it had a hard drive tick and a constant problem with high temps, and fans going crazy, also it was prone to core shutdown. I traded up to the SSD, and thing were not much better, the heat and temps were still a problem, core shut down and any flash ad would set the fans to 6200Ppms, after 6 times in the Apple Hosp. it was not much better. I bought the current model 1.8/128SSD and It's now my dream Mac. no heat, temp is on the low side 45-50 degrees, no core issues and this seems so much faster then the last MBA, I love what the have done to the New MBA. I would recommend it highly!