Benji Trail XL 1100...have been on the fence about getting one for awhile. While I have no first hand experience with that model, I do have a bit with other Crosman/Benjamin springers. The Nitro Piston has spoiled me for anything else. I love the fact that you can cock it in the morning, and walk the woods all day without ever taking a shot, and there's no steel coil spring to stress. Crosman triggers are crap, but if you're careful, you can improve them significantly (and in the case of my Trail, a new trigger group is only 10 bucks if I ruin it). Build quality isn't the best, but if you're willing to dig into them you can make it a very nice gun. Lastly, Crosman/Benjamin guns are pretty easy to get parts for, and their customer service is top notch.
http://youtu.be/W2Y24YS6fEw check this link for a fairly in depth review of this gun. Kenny also tears it down and rebuilds it in another vid on his channel.
Accuracy: depends mostly on the shooter. When I'm "on," my Trail shoots very tight groups (sometimes but not often sub 1/2 inch) at thirty yards. Some guns have bad barrels, all have bad triggers, and often the bundled scope is junk (yours came with a 3-9x40 with adjustable objective, I believe, which I kinda like). Your gun is notorious for recoil, but you can probably overcome any difficulties from recoil with practice. Also due to it's near obscene power, you may find lighter weight pellets (12-14gr or so) to group a bit sloppy at longer distances (30 plus yards). Shooting good quality, heavier lead will often calm that down, and you gun should have enough power for a lot of the heavy stuff.
Power: Crosman uses "hobby pellets" (light weight, alloy pellets that most shooters find very inaccurate) to establish their max velocity. They claim 1100 FPS for your rifle. In the video above, Kenny gets from the low 700s FPS to the high 800s FPS with lead pellets (some were heavy). Anyway, as springers go, power should be the least of your concerns with this gun.
Over all quality: hard to say. It seems like some of these guns are carefully assembled, and others are just thrown together. Hopefully yours is one of the "good ones." If not, Crosman customer service and guys on this and other forums can help. Best of luck!