Everyone has said a lot but here is some more advice:
I have had a Halo Empire B hopper, and it works pretty good. I also bought a Rotor a bit later and love it! The Rotor is the most Durable, Reliable, consistent, and Durable loader out there (and yes I know I said durable twice). The Halo shells are weak and if they are hit right with a paintball they will shatter, or if they are dropped on the ground they have a good chance of breaking.
Still, the Halo is a pretty stable hopper and was the high end best hopper you could get back in the day (was usually compared to the eggy EDIT: and the VLocity also). Now days it is the Rotor and Prophecy. One of my teammates got an Empire Prophecy and said it felt like it was going to break in his hands. The Proph.s shells are like the halos but seem to be engineered to be lighter therefore being weaker.
The Dye Rotor v3 is the way to go (battery Velcro and shark fin/anti-jammer). Depending on how the Halo is holding up, it should be fine since tournament reg is usually only 12.5 bps and most hoppers can feed that, and the Halo can do that with ease. But if you are going to get into it more, when you upgrade, you need to: (1) Upgrade to high pressure air (if you haven't already), (2) Upgrade to a good stable hopper (I would suggest a Rotor), (3) Then you upgrade your marker. You do that as you get money. That is one way to do it.