Absolutely!
I've got the i1 and SpectraView II for the old NEC Multisync I'm replacing.
Actually, I've discovered that I can buy a brand new, with 4 year warranty, PA302 for just $40 more than the refurb, so I'm going to go that route. Although I spoke with NEC tech support (good folks!) and they said they do a thorough quality control of the refurbs before selling. If the savings were more significant, I think I'd be comfortable with the refurb, but $40 for 3 years extra warranty (reforms have 1 year warranty), is a no-brainer!
I'd love to get the NEC 32", but I've read about too many issues, especially with Mac's (will Apple please pull their collective fingers out and make a real graphics computer and OS again....).