Overall, Marbelizer shells are strong and won't break in your barrel or hopper. Some like to use drop tests as a way to determine the quality of a paintball. However, that's inaccurate and doesn't reflect real-time firing velocity. This is true for the dropping you see on bounce tests, as well as the breakage. The shell resists warping and dimpling. Marbelizer fills their paintballs with thick, bright colors that are easy to see. This helps eliminate wiping by cheaters. As long as you're using the right barrel, the Marbelizer will shoot straight and is accurate. The following points have been compiled from various RPS paintball reviews. These paintballs can hurt more than others when they hit you. The harder shell won't break as easily, but they can leave a welt or bruise if they strike an unprotected portion of someone's body. With this in mind, you might use Marbelizers primarily for competition and go with thinner-shelled paintballs when playing with family and friends. Marbelizers are expensive, so that's another reason to reserve them for competition and not recreational use.
Diablo makes a paintball that's bright and easy to see. They yellow is especially visible, which means you'll have an easier time seeing your hit across a field for a greater distance. Splatter is visible, which is helpful if you're uncertain of your hit. It shoots straight and accurately. It's got a tough shell designed to stay intact in your hopper and barrel, but break easily on the target. The shell is smooth and hard, with no dimples and no seam. It cleans up easily, which will save your clothing and equipment from staining. Some Diablo products are small, which may mean they'll roll out of your barrel, so be sure to check them before you buy. The paint itself is easily wiped away, so it might not be best for competition play. In other Diablo products, you'll find some balls with dimples, which can cause an errant shot. This is not a consistent problem, but is one you just need to be aware of.
DraXxus are used for serious competitions or advanced games. The Inferno has a thick fill that will score without staining. It has a solid, metallic shell that allows for quick firing without breakage. The shells don't jam like dull-shells. It will break on your target, however, as the shell is also thin. The key is a glossy, anti-friction SpeedFeed shell. It has a slick surface. It is a small-bore paintball, so be aware of your barrel's bore. DraXxus also makes less expensive recreational paintballs. These also have strong shells and won't break in your gun. It does have dimples, but this doesn't impact accuracy. However, as with any other manufacturer's paintballs, the less you pay, the more you give up in terms of quality.