The Reloader is basically a rip drived Halo with sound actication. However I've found mine to be much better than my std B. You get a 4 cell battery pack as well as a 6 if you want it to be a bit lighter, I used the 4 cell all weekend and haven't noticed it as being slower than the 6 and it is much lighter.
The boards has 3 speeds, so if you are using really fragile paint/don't want it to be at top speed to save battery etc you can use it at a slower speed (that's still faster than I can get out of an EvoII on my gun)
Plus the sound activation happens once for each "bang" so you don't get that REALLY annoying problem where the eye misses a ball and just keeps spinning over presurising the stack
Frankly it get's 10/10 from me, I love it, trying to bring back a second one actually!