Vlocities are one of the most underrated loaders out there. Prophecies are great loaders but they don't justify the price difference between a them and a vlocity. Trust me halos jam and have problems way more than any vlocity I've used or seen used. A good investment would be rechargeable 9volts. Otherwise make sure you have a fresh pair of 9v's when you go out.
I got to shoot one at Paintball Explosion and it shoots smoother than my DM5. If i had the money I would get an LV1 in a heartbeat. Whichever guy at Planet came up with using a lever to hit the poppet is an amazingly genius.