I carry one 180g DX stingray at a time that gets worn in and used when it might get lost, and recently found the foxbat to be the best premium plastic disc for keeping the same flight path that won't change over time. I started with a 180 foxbat and use it for when I have to get the most power into the disc without as much risk of turnover, and a 174 that I sanded the flashing down on for the stand stills and touch shots. The 174 bat and 180 stingray (once worn to no fade) fly about the same at normal power levels, but the bat has a bit more glide. It also will still fade a tiny bit from a high-up shot if I mess up and hit a hard, too-clean hyzer (trying to flip it) or don't snap hard enough. I am sure that will go away eventually but the disc is slow to break in thus far. Stingray STAYS right.
I have tried the stingray in all other plastics it has been in, and even tried the super stingray, but they are all waaaaay more stable than the same weight DX in my experience, and I don't want to spend years on wearing one in or searching out the right weight.
Another thing that is great to do is get a mid that you like the feel of and beat it in over time to get the understability you want. I have a couple rocs and a shark that will fly the same as my stingray but I save them for days when I need my most trusted plastic. For some reason I lose more understable discs than anything else and I have had those discs for years to get them so worn.