I've a 2010 27 inch i3 iMac upgraded with a 64GB SSD and 1TB HDD. I want to sell it and get a new machine. It works fine, but I should have sold it while the Apple Care was valid. My options are: 1)a 13 inch rMBP or Air now and a 24" monitor later (my only concern with this is it will messy connecting my printer, speakers, DAC and other USB items) 2) a mac mini (they're kind of old, and I depend on wireless) 3) a 21.5 inch iMac now and a 24inch dell monitor later 4) a 27 inch iMac later (as in Autumn; I can't afford a 27" now) SSD and 8GB RAM is a must. I write content for websites and use Photoshop. I have a large desk, so space isn't an issue. I used to bring an old Macbook pro around with me, but I sold that. Portability isn't a major requirement at the moment. That said, I used my 13" Macbook Pro on the go, when I had it. I use the entire screen real estate on my 27" iMac from time to time, and I'm concerned about going back to 21. Any advice?