Switch?

To switch or not to switch? A question that I’ve been asking myself for a couple of years now. What am I thinking about switching, you ask? Well, currently I’m running a Windows PC that is about 3 or 4 years old and I’ve been considering making the switch to a Mac for quite some time. I predominantly use my machine for editing photos and I’ve heard nothing but great things about Macs from other photogs. I think it’s really only a matter of time before I make the switch…although it’s a little bit scary thinking about moving all my photos and Lightroom catalogues over to a new computer. I guess the next big question is what Mac do I go for? I definitely don’t have the cash for a Mac Pro and I don’t think a Mac Mini will have enough power to keep me working away for the next several years, so I guess that leaves me with the iMac. Thoughts? Dual-core vs. quad-core? Processor speed and RAM? Refurbished to save some $$? Any recommendations would be greatly appreciated!

Oh, and here’s a pretty picture of a train track switch.