Concept cd-2410

What do you guys think of the concept cd-2410 and the concept ccd-2400? I can get a new cd-2410 for 500 w/ warranty from a local dealer or i could get the ccd-2400 for 275 shipped off ebay but its a refurb.... still comes w/ a 90 day warranty though. What do you all think about gettin refurbs? I'm powering a pair of re sexxx 12's.... right now theyre on a shitty pioneer amp.