I'm about to pull the trigger on a 20" iMac... I love, love, love, love my parents 17" iMac and OS X. However, I'm actually a little worried about the cost, because I *must* have 500 gigs. My only other worry is the screen brightness... My small-ish Sony LCD has XBrice which is rated at 400 brightness and the 20" iMac is rated at 280... so i'll see a drop in brightness, but do you think that a difference of 120 is considered a huge amount when talking about screen brightness? I used my parents 17" iMac and the brightness seemed good enough but I could tell it wasn't as bright as my Sony. My Sony lcd is 2 years old and people are still playing catchup with the brightness technology with the exception of the 30" Apple cinema display. Anyways, my plan is to sell my 17" Sony LCD XBrite and my HP Athlon 64 PC (2.0 ghz) with a 1 gig of ram and 400 gigs worth of drive space. I've noticed that many PCs are now $399 for a machine that is similar to mine in specs (darn). So I'm wondering what would be my best bet in making the most amount of money possible off of my PC? I thought eBay, but wouldn't shipping kill me? I thought the local paper, but I'm not sure how successful computers in classified ads are. Any help would be appreciated, I really need to have my PC sell within 2 or 3 weeks of getting an iMac should I decide to "pull the trigger" on one.