I have the Bushmaster Varminter - the one with the black fluted 24" barrel. Its been a great rifle. no problems and accurate as can be expected. Great staged trigger. the loose wingnut behind the stock is the weak link in the system. Accuracy has been one MOA or less ( not that I can shoot much better than that). One piece of advice is to put a scope with good eye relif on the rifle. Mine has a Nikon Buckmasters 4-14 that doesn't have the kind of eye relief that a better scope would provide. the risers prrovided with the rifle do an OK job of getting the rings high enough to be comfortable to shoot, but the scope I have (bough used with the rifle) isn't as forgiving as a Burris Black Diamond, Nikon Gold Monarch, or Luepold VXIII.
The rifle deserves a really good scope. Its cheap to shoot. Minimal recoil. It is a bit bulky, with the bipod, to carry aournd for long, but its meant to be used from a rest as a varmint rifle. Still, overall wieght is around 10lbs, or a bit less.
The other Bushmaster version is the "Varmint Special". It has the target grip, but other than that and the stainless barrel, I'm not sre what the difference is.