This is a very fast loader, but it is very noisy when putting tension on the stack. Not recommended if you play any woodsball or scenario games, it will give your position away every time. Not really a concern for speedball/tourney players.
My 2 XSV's have not had a single clockspring break and they have had atleast 10 cases through each. (I lucked out!)
Rechargable batts are super light and work great!
I use my VLocity Jr w/ virtue chip for woodsball. It is still noisy but much less of an audible whine to it.
Car and wall charging options is great!
Great for speedball, not for woodsballers. Great batteries and charger options. Very light compared to the Halo types.