I use one on my target bow for spot shooting, but have not made the switch on my hunting bow. the benifites are they can help in reduceing some of the natural tourqe the bow has when the bow is shot. it can also help offset the natral out of level grip you have on your bow by changeing the natral balance left to right. its real noticiable with my 41 ata target bow. by being level more natraly your shots at longer ranges tend not to walk left or right.
disavantages are weight, and something else to catch on brush and ding on branches. my target stabilizer is a 35" with 7 ounces of wieght, my v bar is 12" with 10 oz of weight.
my hunting stab is 10.25 inches with 5 0z wieght on the end