I have heard good things about the Argus.
It's too bad that in order for server reasons, Glocktalk limits the search for the past 30 days now - I think he purged a lot of old posts... There were a lot of topics on the Argus. I looked because I thought about getting one a year or two back. I just never got around to it.
The only neg I read is that when U buy a new one, it is often times PACKED with cosmoline when U first buy one. So, it's a super pain to clean the very first time before U go shoot it.