I just purchased an Octane Bantam Weight Quiver, and it is great. Lightweight, extremely adjustable, and quite. I tried the Octane with the magnets. Heavy, Heavy, Heavy. It is also well built, but it was way too Heavy and added significant torque to my Black Ice.
I looked at The Alpine Soft Lock, Apex, & the Quickie Quiver. The Bantam Weight is more expensive $79, but as I stated above it is well built, very adjustable, and very quiet. Check it out if you are looking for a new quiver.