Hi, Long time PC, first time Mac etc... I purchased what was advertised as a 15" MacBook Pro 2.16 Core 2 Duo from late 2006 on eBay, but got a first generation 2.00 Core Duo (upgraded to 320GB HD and 2GB memory) instead. I already asked for and received a partial refund, so it's too late to do anything about that, and it's a spiffy little machine for what it is. Here's the thing: I bought this because I do PC tutorials and repairs on a small scale, and since more and more people are using Apple I deemed that it was high time I became Mac literate too, and I really only wanted something to learn how the OS X universe functions... ... BUT, I can't do Lion on less than a C2D, and in truth I'm starting to like the MacBook Pro a lot, and wish I had something a little newer and faster. I don't have much money. So I would appreciate experienced opinions on: 1) Will the a1150 running Snow Leopard have at least a 2 or 3 year life of being "reasonably" current? How long until I'm hopelessly out of the loop? 2) What's the oldest, least expensive MBP model you would use for, say, audio or video encoding? 3) Or should I try to resell my 1st generation Intel MBP for approximately what I paid, and get something from 2007-2009? What's its real relevance and value? In the PC world I have a really good sense of what a machine is good for just by reading the specs, but can't yet do this in Apple World. Obviously, if I had the bucks for an i7 or something I'd be fine, but I'm looking at the cheapest "mainstream" option, and don't know what "mainstream" means. And BTW, I know the Mac Mini is a great cost-efficient option, but really dig the MBP and need something portable, so I'm sticking with it. Thanks in advance for any knowledgeable opinions or thoughts.