Hello everyone. I currently have a 3+ year old iMac 24" that I use. I need a portable device to work on when in the field, originally I was planning on just getting an iPad, but for not too much more money I could get a Mac Book Air and have a lot more options. I think I would like to get a Mac Book Air for use in the field and that nice 27" monitor to connect to it while at home, and sell my current iMac altogether. My concern is if the Mac Book Air would have similar or better performance than my current iMac. I know the specs look better, but I'm not sure if there is more to it. The specs: Current 24" iMac 2.66 Ghz Intel Core 2 Duo 4 GB 1067 MHz DDR3 NVIDIA GeForce 9400 256 MB I installed Lion on it. Base Mac Book Air 1.7GHz dual-core Intel Core i5 (Turbo Boost up to 2.6GHz) with 3MB shared L3 cache 4GB of 1600MHz DDR3L onboard memory Intel HD Graphics 4000 So would the Mac Book Air be at least as good as far as performance as my iMac? FWIW, I do not game or do any type of heavy graphic or video work. Just general computing. Thanks for your help.