I'm in the market for a used pre 2012 (don't ask why) 15 and 17. I've concluded that the best would be the mid 2010 with the i7 and antiglare screen (both 15 and 17.) I gather any mbp in 2011 is non grata. How about the '09s. i don't want to go any earlier. I llook forward to the experts opinion. Probably be being on eBay, so what's best to loo for and what's reasonable prices.