I have both the Collari 32 and OS 30VG for my Savage. Both of them has lots of power, my OS has just as much low end torqe as my Collari. I like both of them. I had to send my Collari back to the factory because the space betwen the piston and the backplate was to smal, destroyed the piston. But Werks has great customer support, so they are fixing it for free. No problems with my OS, easy to tune and idles like a dream all day long.

I have posted this link before but it shows the low end torq of the OS in a heavy Savage with lots of option parts:

http://www.rcpics.net/view_single.php?medid=67783

The 3 speed shifts directly from 1 to 3 gear on this vid.