NO!
Don't get a MBP with a 8600 in it. I just sold mine because it died (it was replaced under warranty). A refurb doesn't really make you less likely to have problems. Non of the Mobo revisions changed anything about the graphics card--and ALL of the 8600's have a packaging defect. While it is true you may not experience any problems....for a while, I truly wouldn't get one of these laptops. I am a student (so not exactly rich) and I was worried enough about it (it failed on me during finals period) I bit the bullet and got a new MBP.
I know its not related, but my MBP also had screen that went bad (totally separate issue from the GPU) and a fan that died (happened after the GPU, so it didn't cause any undue stress/heat on it).
Plus, the new MBP's are much better constructed. I babied my 15'' SR MBP and after 2yrs it was creaky: the top panel was perfectly tight to the bottom, the hinge was wobbly, the screws got super loose,etc