I've got one in .223 I picked up earlier this year. It's got 5-15 Bushnell legend. While I don't think it's the most inherently accurate rifle out there, it's not too bad.
I started hand loading a while back, and I've worked up some nice loads for it, and depending on how I'm shooting that day, it will shoot under .5 MOA. Really! But you've gotta work at it. I thought with the 1 in 9 twist, it would prefer the heavier bullet, 65 gr - 69gr. However it seems that the 53 gr Sierra HP spitzer works the best with some IMR 4064.
I gotta think that the muzzle break doesn't seem to have much effect, other than a little harder on the ears according to a buddy, but I don't have another .22 center fire to compare to.
All in all, it's a nice carry rifle. Light enough and well balanced. Sure, the stock isn't the best, but then I think the price reflects that. Is the triangular barrel kinda gimicky, probably. But it's different. And different isn't always a bad thing. The x-pro trigger could be lighter, but breaks clean with no noticable creep.