The Track Stealth is amazing, one of the best mid-balls I've ever thrown. The Stealth has been on my radar since its debut (see what I did there?) but finally bought one once it reached that sweet sweet B7 closeout price.
I have seen a lot of different pros throwing the Stealth which is generally a major indication a ball is special. Upon drilling and throwing mine for the first time, I was completely shocked at how stable it is. The Stealth feels like you're throwing urethane with how consistent, stable and round it is. But this ball has gigantic flare with some of the biggest flare rings I've ever seen. It rolls and moves just like a Purple while being able to dig and cover maybe twice the boards. It is one of the most distinct and useable motions and feels from a ball I have ever experienced.
I don't think I've ever thrown a resin ball that is as round or stable as the Stealth. It is so much fun to just roll it out into the friction and have it just roll back into and through the pocket every time.
I've only thrown about 10-20 games with mine so far but I already know the Track Stealth is a major keeper and I definitely want to stash one or two more of these as there's nothing else quite like it.
The only negative to it, this is a mid-ball. It's not a miracle worker and flip hard to cover as many board on the back end as your top asymms. But this is one of the most useable, controllable balls I've ever thrown. Definitely going to be in the bag for a long, long time to come.