I own a Quad 400 avi. Bought new in 2010.The only problem I have been having is the serving keeps coming loose. I also feel that it is a bit heavy and to look through the scope I have to tilt my head quite a bit to the right (over top of the stalk). I have shot it maybe 100 times and taken 1 deer with it (passthru of a 160 lb buck) using grim reaper 100g heads. One pin out to 30 yards. I can not complain about the accuracy at all as I can not aim at the same spot with out robin hooding the bolts.

On a scale of 1 to 10 I would probably rate it a 6.5 to 7. The weight and how I have to look thru the scope are the main problems so far.