Okay, now for the homerism. I am a Track whore, so take what I say with a grain of salt on these balls.
Track 912T is probably the most amazing heavy oil ball I've ever thrown. I would say the key difference between the 912T and the Wicked Encounter was that when you take down the surface it's still the same shot shape, just weaker. Knocking the surface down, you get about a 5 board different in strength. The 912T just is clean through the front, but once it reads the late midlane it just continues and doesn't stop until it's through the pins. I've never had a ball with such an aggressive surface just not quit. I know for many the 9-series has been pretty hit and miss. I didn't like the 916AT or the 919C, but you couldn't pay me to get the 920T and the 920A out of my bag. Relax bowlers, the 912T has the goods. If you need a heavy oil piece that then you don't really need to look any further than the 912T.
Outside of the IQ Tour, the Track 503T was the ball I was most looking forward to trying out. Overall, I must say that this was my second favorite ball of the day. It just does everything well. It was probably the weaker of the Endure and Oath, but it was only a board weaker than the Oath, but much more continuous in the backend. For those of you that want a benchmark ball that has a little bit more bite in the back part of the lane than the 503T is for you. I didn't think you could possibly improve on the 505T, which I was rightly pissed with they discontinued way to soon, but the 503T does everything the 505T does, but better. The 505T had a tendency to get a little flat in the back, but the 503T just keeps going and going. Overall, that was the key difference of why I would pick it over the Oath. As I stated previously, my key miss is getting firm with the ball at the bottom, of the three ball I mentioned the 503T was the only one that still got back to the pocket even when I messed up. I would note though, I got the best carry of the three with the Oath, but not by much.
The Track 706A was just a good ball, but I didn't leave the Supershow thinking it was a ball I had to have. When I think back, I know it has a place in my bag, but the 706A is the ultimate in vanilla. The ball was about 4 boards stronger than the Hammer Arson Pearl, but where this ball shines was that it was so clean and smooth I could get slower and slower with it near the gutter and the ball never once jerked early towards the pocket. I think I got out of this ball what I was expected out of the 300A, but without the 300A being at the Supershow I wasn't able to accurately compare. However, the staffers told me that the 300A would be longer and much more angular. The 706A is just long, clean, and super smooth.