I shoot a NAP 4000 drop away on a Cybertec, and like it alot. It may take a little time to get it just right, but it works great, and seems to have rock solid mounting and adjustments. I've had it for about 3 months now, and no troubles so far. Its also very quiet, and the arrow containment with the stick on arrow holder is great. You can turn the bow on its side, and it wont fall off.

I would also recommend the MZE. Its also a great, quiet drop away that has a great following.