I've used this product on both a 98 Custom and a Spyder Aggressor XT. Also have used a DYE Excel Barrel on an Avalon Diamond GT, DYE Boomstick on a 98 Custom.
Silver Tippmann Model 98 Custom w/ 14" Taso Winforce barrel
Anything other than DBX (terrible ones that come in a black case from stores like (it won't let me say the 'D' word) Sporting Goods) or anything Brass Eagle. Mostly I've used ZAP Primers and Torks through the barrel on both guns and have never EVER EVER EVER had a ball break because of the barrel, and never EVER EVER EVER had a ball break in the gun at all.
Accurate; friendly with most paint
If you are going to get a barrel in the $30 range, this is the one to get, for either a Spyder or a Model 98. If you are looking to go a step up, the J+J Ceramic is the way to go. Otherwise, price shop and find where you are going to get this barrel, because you should get this barrel. Get ZAP paint and you are good to go. Like I said, don't use the DBX. I let a friend of mine borrow the gun for a day of play once and he used this paint. I'm telling you later that day I was cleaning paint out of parts of the gun I didn't know paint could get in.
Best possible barrel for a Spyder or Model 98 in the price range