300!

I shoot the 8" Stealth on my BowTech Patriot Dually and I used to use the 6" before ,I like the Stealth because it has to different weighted end's on it a light end or a heavy end which ever work's best for you .I use the heavy end in and find it add's a little more dampening for my riser ,but the bow still roll's forward just nicely.But if your bow is jumping when you shoot you can turn it around and use the heavy end out to cure the problem .
It's hard to say for me which you should use since I've not shot the Ally or the Tribute ,but Ithink you'd be safe witheitherthe 6" or the 8" ,I just like the 8" better ,it just give's me a bit more comfort.,
You can e-mail Jerry at his business and he'll be sure to give you a little more advice on his stabilizer's and make it a little easier for you to choose . This is the addy your looking for .

www.stealtharchery.com

nubo