I live near Robinson Armament, and am over there fairly frequently, talking to the engineers and to Alex Robinson, the owner. I am therefore perhaps more aware than some others of the details of design and construction quality, having seen some of their operations first-hand.
I own an M96, in Rifle, Carbine and Recon configurations (all interchangeable), and it's nothing much like an AR, nor is it really a copy of the Stoner 63A, though it resembles the latter in its external appearance, and in its modularity and interchangeability between "Bren" (top feed) and standard setups. A belt-fed mod is also in the works, for those who like such things. (Not being a fan of full-auto in any rifle or caliber, I can't see the use, especially since the M96 doesn't come in a select fire edition. I prefer AIMED fire!)
It incorporates admirable features from the AR, the AK, and the FAL
It's a very well designed and well made rifle, probably the best battle rifle in .223 (actually, chamber spec is 5.56 NATO), IMNSHO.
It's very robust, quite accurate for its intended role (1-3" at 100 yards) and while heavier than an AR, is also MUCH sturdier.
Prices in standard rifle configuration can be found varying from (USD) $1199 to $1550.
There's quite a bit of info on the 'net for those interested, such as
http://www.robarm.com/
http://www.biggerhammer.net/m96/wwwboard/
http://www.m96.org/
and if you download the free (Oct 2001) issue of SWAT magazine from TFL, courtesy of Rich Lucibella at the front page of this BB, there's even a review article on the M96. Best.