I'm quite happy with my MBP - it's a late 2008 model unibody 15".
The only thing I wasn't happy with is the sneaky tactic used in regards to how much you save off the retail price. The refurb store (Australian) indicated I was saving 32% off the RRP, however that saving is from the original sale price, not the current price.
At the time I bought it I didn't realise I was purchasing an '08 model. For an extra $100 I could have purchased a brand new 15" unibody (albeit without the discrete card and removable battery).
It's a case of buyer beware, and at the time I wasn't aware. Now I am I'd definitely be checking the refurb store twice before I bought anything again, just to make sure I was getting a good deal.
*NB - I still did get a good deal, as it has all the proper warranty etc. If I had purchased off eBay for cheaper, it would have been an older model, with cosmetic wear, no warranty, etc.