I have a PBG4 1.5ghz that is still running really pretty well but I am heading to grad school and will need to upgrade my rig. Originally I was just going to get the new mbp when it came out but school starts next week and I dont really need/ cant wait any longer for the newest model. Additionally my new school has 24" imacs 2.8 500gb for $1250 + $119 for apple care = 1369 US. I could prob swing the iMac + a macbook if I sold at least one of the ipod touch's. My current desktop is an old amd system i built and is also on its last legs FWIW. 1) Is that as good a price for the imac as i think it is? 2) I love my PB 15" screen and keyboard. Will i notice a big difference going to the smaller macbook? 3) Should I spend the extra money on the imac +mb or just get a MBP as my sole computer which is pretty much where im at now (as i rarely use my desktop bc its too slow) ?