I have an early 2008 24" iMac with original 2GB ram. I am planning to buy the 2GB + 4GB upgrade. Last weekend when I started researching this there was a site that had a decent price that I can't find anymore in spite of searching. OWTC or something like that. Anyone know who I am thinking of? Barring that, any advice on where the best price can be found? Also, this is an expensive upgrade relative to just going with 2GB + 2GB (and more than 4GB + 4GB, which I know my machine won't handle)--is the extra 2GB worth it? I am not a heavy duty user.