This is an excellent monitor, I have one and it was purchased from Sams about 3 or 4 months ago for $560.
KDS "USA" didn't go out of biz, it was another division in another Country. Sorry don't have a link but I am sure it was in one of the old posts, see below.
Most of the stuff you guys are talking about , and a lot more, have been well covered in previous posts. IE: Quality, this one vs. that one, gaming (it rulez), etc etc. Just type in KDS Rad into the search and you will get all the info you need.