I'm looking to buy my first Mac and I did a search for previous comparisons of 24" vs 21.5" models. It seems like the best option varies depending on the configurations, so hopefully you'll indulge me. All things being approximately equal, I'd rather have the 24" screen because of the additional vertical space from the 16x10 ratio. When I do photo editing, I'd like the extra vertical lines so vertical photos can be larger. Smartshooter.com rates both screens as good (not great), and they are very picky with their evaluations so I trust that I'll get a good screen either way. So, the 24" iMac is $1100 at Mac of All Trades (good vendor?): 2.8GHz Intel Core 2 Duo 2.0GB RAM (2x1.0GB) - I'd upgrade to 2x2GB 500GB Hard Drive (7200rpm) - I don't expect this to be an issue for me. DVD-RW/CD-RW SuperDrive-DL ATI Radeon HD 2600 PRO video card (256MB) I'd have to buy an upgrade to the latest OS and iLife. The refurb 21.5" is $1300: 3.06GHz Intel Core 2 Duo 21.5-inch LED-backlit glossy widescreen display 4GB memory 1TB hard drive 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) ATI Radeon HD 4670 graphics with 256MB memory Once I upgrade the 24" to the latest OS, iLife and RAM, the cost will be about a wash, but what about the other specs? I appreciate your comments.