I've got a Loudmouth Torque - it will feed very fast and is easy to dismantle but it is a noisy bugger as the rotor runs constantly rather than waiting for you to fire.
If you can put up with the constant whirring of the rotor inside, it's not too bad and they are much cheaper than the alternatives. But to be honest, since I got a Dye Rotor, I rarely use it now.