Hi, all, A couple of months ago I posted a thread about considering a new iMac, where I have limited resources. I felt a little put upon by folks suggesting I was being cheap, and I wanted to try again as the time is coming nearer for a decision. I'm in the market for a new iMac. My current one is a mid-2009 model, Core 2 Duo, getting long in the tooth and starting to bog down under El Capitan; I expect it won't support the next OS in any event. It's lived a good life and given me six years of reliable operation, so I don't feel badly about replacing it. I am looking at the 21.5" iMacs, and considering options. I'm disappointed that at the 21.5" size the new ones are not user-upgradable at all, which means if I want to upgrade the RAM it's at Apple's high RAM prices. So, given the options I have and trying to keep costs down, I would like some input as to which option might represent the bigger bang for the buck. I am considering two of these three upgrades: --Moving up from the low-end model (1.6 GHz Core i5) to the mid-tier model (2.8 GHz Core i5) at the standard 8GB RAM --Staying at the low end but upgrading from 8GB to 16GB RAM --Getting the 256GB SSD instead of the HDD I'm not necessarily interested in maximizing speed. I'm more interested in maximizing probable lifetime. But of course faster would be better than slower. Thanks! EDIT: I would also consider refurbs, if they enable avenues of upgrade that would be better. For example, getting a 2013 iMac would enable me to upgrade the RAM at a little less money (though not THAT much less). EDIT REDUX: I suppose another option would be to go all the way up to the top tier...would anyone consider getting the top tier stock, with no upgrades, compared to the low- or mid-tier with some upgrades?