Help with a compound bow rest?

Now I just bought a 2011 bowtech assassin and it has the hostage rest on it. Well i have shot a few different arrows through it and maid shure that the vanes were correctly lined up with the rest but the arrows still do not shoot correctly. Now I like the fact that it holds the arrow for hunting. But I would like to put a drop away arrow rest on the bow, but is there any brands that hold the arrow when the bow is not fully drawn and which brand is the best for hunting and is a very accurate version because i would like to get into some 3d archery aswell. thanks for any help.