anyone have any experience with them? i saw a few for sale on here and ended up bagging a new one on ebay for $500. i saw some reviews on other sites but it was hard to tell how biased some of them were since some were by business owners selling them. i searched this site but nothing came up as far as reviews or opinions goes. any info is appreciated. i figured even if they suck i can turn around and at least get my money back.