A friend has offered to do a deal although im not too sure what to do. I have the following... Latest 2012 13"mbp i5 with 16gb ram, samsung 256gb 830 ssd, 500gb momentus xt hd. And a non thunderbolt 27" Cinema Display. My friend has a... 27" iMac, 2.66 i5 Quad core, 8mb L3, 16gb ram, 1tb hd, ATI 4850hd 512mb. He will also give me £1000 cash. Now, i could buy another 13"mbp for £850 new with a 3 year warranty and modify it again and use the iMac as a second computer and also as a second screen for the new 13". I have a home studio and work with fcpx and logic studio so i need the big screen for long sessions. Would using the iMac as a second screen cause any problems? The other option is that i could sell the iMac and buy a new thunderbolt display with new warranty? How much is the above iMac worth (UK) Thanks.