I currently use a 2011 15" Macbook Pro with a 2.2Ghz i7 CPU, however as I am starting to use this more at my desk (which unfortunately causes the fan to run high), I am looking for a cheap(ish) used iMac to replace my Macbook Pro. Unfortunately, I cannot afford a brand new iMac so I have been looking on eBay but can anyone suggest what minimum spec I should be looking at? I don't mind going down the Core 2 Duo 24" iMac's if that's the best option. I do some light photoshop/illustrator work but mainly coding. I also use parallels to run Windows 7 as I am yet to find a suitable Mac alternative to WinSCP. I am trying to avoid a Mac Mini if possible.