Can't really comment on your particular rest choice, but I have a Silencer and the dealer I bought it from, he bought the new Onza 3. Both bows are really awesome. Both bows have Alpine drop away rests and they have functioned flawlessly. You won't be disappointed with either bow.
-2011 Martin Silencer 63# 29.5", Limbsaver prism elite .029 sight, Alpine Whisperflite drop away rest, Alpine 5 arrow quiver, G5 1/4" Meta Peep, Carbon Express 8" stabilizer, Gold Tip Warrior and Expedition Hunter (385gr), G5 Montec
-2011 Martin Silencer, 73# 29.5", Limbsaver prism elite .019 sight, QAD Ultra Rest Pro LD, Tight Spot 5 arrow quiver, 1/4" G5 Meta peep, Carbon Express 8" stabilizer, Gold Tip Expedition Hunter 7595 camo (441gr), G5 Montec BH.