My old 17" MBP gave up the ghost recently. I had reached 98% capacity in my 120 GB drive, and my VMs were dying with Snow Leopard with only 2 GB of RAM. This was the max at the time that the model supported.
I found out from iFixit that my model could upgrade to 6 GB of memory with a manual repair. So, I did that. Then I bought a 500 GB internal drive, and put it all together. Then the logic board died. It's about $900 to replace the logic board, and even then, it's likely only a refurb.
So, I went out to look at a new Mac. Here's what I found.
This is not a hard core hardware review of the new Mac. I don't have that info. But, here are my consumer thoughts - price, upgradability, features.