Just got it at the Meadowhall store in Sheffield UK earlier. The only Apple product that I have previously owned is an iphone which I switched from windows mobile. Loving my iphone so I went one step further. I have had PC's since the 386 CPU's were around!! This thing is beautiful. I have already set up spaces and expose, what a joy. My screen has a very very slight yellow tinge on the test but it took some finding and i have 20/20 vision. Im happy and will not be exchanging. In use everything looks great. My previous PC is a Core i7 4GHZ, ATI 5870 and a 128Gb SSD. I was thinking of putting the SSD in this machine but after using it today I think I may just sell the SSD and get an ipad to complete my apple computing experience. Just wanted to say thanks for the advice I have had over the last month as I have been deliberating to change. Anyone thinking of changing from PC, just go for it. Gonna upgrade my RAM to 8Gb over the next week or so. BTW this machine is a week 10.