Yeah refurbished is okay. Most companies put a different board in. And sell it as refurbished. I have bought refurbished amps before and never had a problem, But the only down side is be prepared to have scratches on the jbl amp at car domain, i've had friends buy 2 amps since they were on sale and both of them had scratches on them nothing too bad. I't's worth the price, go for it.
I don't care what it looks like. It can look like a rusty frying pan. As long as it pounds my delicious prowedge box. I hooked my speakers up in my boy's car with a JL 500/1 and they sounded like magic. A little different than his W3-V1s; mine sounded a little more deep. Maybe it was the box. I have a Sonoma so with the small cab I'm expecting it to sound real nice when eveything is hooked up. Can't wait to get the JBL amp and see how it is.