Im torn between getting an iMac (21.5 2.9 i5 650M) or a Mac Mini (2.3 i7 Hd4000) with a decent monitor (Dell 2412M). My main use is going to be photo organisation and editing with photoshop / lightroom. I will have several of my images printed and want them to look similar to what I see on my display. Also the odd bit of light gaming (sims 3 mainly). Please help. What would be better and why?