I've got no problem with refurbished products. I've bought a few things, a PDA, a monitor and a laptop which all worked like they were new. I did have troubles with a refubished VCR that I ended up returning twice before paying the difference for a new one.
There seems to be somthing about VCRs but otherwise I reccomend the refurb path wholeheartedly.
That said, $30 doesn't seem like very much of a price difference, I'd expect a little more so it's up to you.
I'm rarely organised enough to keep track of warranties that last more than a year so the extra warranty time that comes with a new product isn't too much of an issue for me.