I tried to get a demo unit sent to my local shop about a year ago, as he had just become a dealer. I talked to some very nice people down at vortex. (its only an hour away from me in Madison!) they were very helpful, and offered to send a scope to my dealer on a memo note.... if i liked it, buy it. if not, send it back. very reasonable.
When i went in and placed the order, my guy told me he had sent all the product back and canceled his dealership.... he indicated that the demo units he saw were top notch, equivalent with some other top names in his opinion. The actual order was very much different. very poor quality, the whole works was poo.
He suspected they got an entire order that was bad from overseas, since he was looking for a higher end product, he just moved on.
I have heard numerous good things since then from reliable sources, so possibly it was just one batch. I suggest contacting someone local that is a dealer, and arrange for a demo unit to ship. they seem to have all the right specifications, so if the glass is good, it should be a winner.