Nope. I went down this road. I live in Alaska, and everyone has a bear gun. I looked closely at the Tracker. I bought a Redhawk.
The Tracker is, on paper, an attractive option. But it ends there. I know of several Taurus revolvers that have had critical failures. Raging Bulls and a Model 10 knock offs with cylinders locked up tight as Ft. Knox. Timing issues, etc etc. (The internet is full of stories.) The Tracker is, as you say, light to carry and cheaper than both the Ruger and Smith. The Taurus is fine as a range gun. I just don't see the Tracker holding up to serious use.
Here is where the rub is: if you're carrying a gun to protect against bears/dangerous game, you better be very proficient with it-just as you would an EDC/CCW self defense gun. I've put literally thousands of rounds through my Redhawk. The majority of that is, of course, 44 spl., but I've run my fair share of super hot hand loads through it as well. Would a Tracker hold up to that? Possibly. But I know that I can put my Redhawk through anything, and it will always go bang.
The Redhawk is a boat anchor. I never, for a moment, forget that it's there. No matter how I carry it. I considered trading it for the Scandium 329PD, but even those have stories of cylinder lock-ups or the Hillary hole failing under heavy recoil.
If you're truly in need of a big bore revolver for dangerous game, skip the pretenders, buy once-cry once, and get a solid gun. It took me a few years to save enough to buy the Redhawk. I'm glad I did, even though it's a beast.