I would be so grateful if anyone could offer their opinion/insight on a purchasing issue... My mom needs to purchase a desktop for personal use, she would prefer to stay away from Windows 8 and is more familiar with OSX so she'd to purchase an iMac, however she's not your typical user in that she really only wants to be able to browse the web/email/facetime/watch videos/create word documents here and there (ie. no gaming/graphics/design etc.). She's also a retired teacher and can't really afford to spend more $900+, so she's been looking at refurbished options at Micro Center. They have refurbished 20 inch iMacs right now for $599. The person helping her in the store said they were manufactured in 2010--he told the lifespan of an iMac was about 8 yrs and, she could therefore expect to get 4 yrs more out of it. I told her the 20 inch model was discontinued in 2009 so it couldn't have been from 2010. I assumed they were the early 2009 model, and I advised her to go for it, but when she went back today a different person checked the model number and they're actually the 2008 model. I know the main differences between the two of these models are RAM limited to 4 vs 8GB and the 2.4 vs 2.66 processor--the consequences of which being that she likely wouldn't be able to upgrade to Mountain Lion without encountering some performance issues. And then there's the fact that it's even older than she'd originally thought when she's hoping to get at least 2-3yrs out of this computer. I've had MacBook Pros but I've never purchased a refurbished Mac, and I've usually had a new enough model to be able to run the latest OS, so I don't know how using one that's outdated really effects the user experience for someone who is only looking to perform basic tasks. Can anyone tell me whether they think $599 is a reasonable price for this computer? ( http://www.microcenter.com/product/415886/iMac_20_All-in-One_Desktop_Computer_Refurbished ) How much longer do you think a 2008 iMac can really be used for the kinds of basic tasks that I described? Is it ridiculous to purchase an iMac this old (will it become obsolete in a year), or, assuming its in decent condition, could someone still get something out of a 5 year old iMac? I'd be so grateful for any advice anyone could offer. If she buys this computer, she's going to do so this weekend since purchases will be tax free for back-to-school shopping. Thanks!!