I have heard from a few people who bought refurbs
from Apple that they were not only reliable, but great deals, and get the same warranty coverage, are eligible for Apple Care extended warranties, etc. I'm not so sure about refurbs sold by a third party, though.
I'd check out
the Apple Store's refurbished link (which, right now, has the same deal) rather than go through the link you provided (which is probably some sort of ad link referral or something.)