Ok. I'm coming from a 15" 1024x768 screen on a HP notebook. Was all set to buy a 14" iBook, then Apple released the latest rev of the iMacs, so I'm back onto them now. *Sigh*. I've used a few 17" iMacs at University (1.8GHz) and they're great, the screen is fab. Now I've come to order, I'm not sure if the 20" screen is worth the extra £250 GDP. Yes, I know it comes with 90Gb more storage, but on my laptop (main computer) I'm only using - 10Gb. Even factoring in massive broadband usage downloading MP3's and video, this is unlikely to exceed 30Gb in the near future. Might do a little minor video editing though. Basically, even though the 20" comes with 250Gb I'm not gonna use that. I don't know what "XT" means and how the graphics card on the 20" is better. Doubt I'd notice any difference between the two? I dont do games, only office work, some photo editing and general home use. I have a decent home cinema setup in the house, so the only DVD useage it'll get is when I'm in bed and want to watch a DVD with the gf. So. Yes, I know the 20" would be great and yes I can afford it, but I'm loath to spend that extra money if I wouldn't benifit hugely, or if I could spend the extra money more wisely (more RAM etc). For "real world" home usage, is the 20" *that* much better? If you're gonna winge on that I should use the search as this has been discussed a hundred and one thousand times before, I have, but all I get is "get the 20" cos its great" - that I'm sure it is, but *how* great? I dont really have the oportunity to test one apart from in the local store, which isn't really a good test.