Short and sloppy Answer: Halo or Dye Rotor.
Informative answer: Let's briefly talk about three different kinds of hoppers:
Gravity feed- referred to as the shake'n'shoot, it has no form of automatic feeding. These are OK for messing around in the woods and pump play, but you should really get something better.
Agitation- Most Viewloader hoppers fall under this category. when the paint is jammed in the loader a propeller spins, dislodging it and allowing it to feed without shaking. Still relies on gravity but it helps to prevent paint getting stuck in the loader.
Forcefeed loaders- the standard today. These loaders actually catch paintballs and force them down the feedneck when you are shooting. the result is not only the absence of jams, but the paint is actually fed more reliably and quickly than gravity would allow for in ideal conditions. If your gun is chopping paint it may be because it isn't feeding all the way into the breech before the bolt hits it*, and a forcefeed loader is a great way to resolve that.
Great loaders: Odyssey Halo, VLocity, Dye Rotor, Pinokio, Empire Magna.
* There are several kinds of paint failures that can generally occur in a marker. Relevant here are chops, clips, and barrel breaks. Chops are very common when you have a gravity or even agitation loader and are when you fire the marker before the ball has been chambered "chopping" it in two. Clips occur typically when you have a forcefeed loader on too strong a setting, it may force the second ball in the stack into harms way, causing the bolt to clip it and get paint everywhere. Barrel breaks are exactly what they sound like; the force of the air and the friction of the barrel shred the paintball. In short, if you see paint in the chamber of the gun, or the feedneck it's most likely some type of loader failure.
And as I always tell everyone who asks what to buy, before you drop a lot of money on loaders and guns remember that you should be more worried about getting a top of the line mask for comfort, vision and safety. Think VForce Grill, Empire E-vents, Dye I3 or 4, Proto Axis, etc.
John Hoover
A "feeder" is just another name for a hopper. The correct term is "hopper"
unfortunately no it does not come with a hopper
The dye Rotor.
Definitely a tank before a hopper. If you go on Zephyr Paintball they have a 20 oz C02 tank for only 14 dollars and a proto primo hopper for also 14 dollars.
No, all paintball hoppers have a standard neck size.
The Feedneck.
Yes. you may need a neck adapter though.
A hopper is like a holder a hopper usually holds 180-200 paintballs, a hopper feeds paintballs down into the chamber of your gun were the bolt can force it out the barrel. I strongly recomend you invest some money in a good electronic hopper. A tank holds air which is like food for your paintball gun, it is used to operate all the parts in your gun, there are three types of air used in a paintball gun there is co2, which is not good for your gun because it might freeze your gun up and god forbid u might get frost bite but is rare, there is compressed air which is the best for your gun, then there is nitrogen which is better then co2 but worse then compressed air.
A paintball gun, unlike airsoft or real firearms will have a hopper on top, and will have a co2 tank sticking out of the back.
Hopper or Loader
Most paintball guns use an above hopper instead of magazines or clips like firearms. The standard hopper holds 200 rounds. Most magazines for paintball sim-markers are 30 rounds. No paintball guns use clips.