Too many variables - What you use and why would depend on lots of things. How you use the vehicle and what you expect from it. Are you a 'car show' kinda guy who keeps his vehicle freshly washed and all shined up every week? More importantly, where do you keep it when you're not driving it?
The best thing you can do with anything you want to last a long time is . . . . . keep it out of the weather, especially out of the sun. If your TC is garage kept anytime it's not being used, the modern finish on it will likely last a long time without you doing or using much of anything. It really amazes me how many vehicles which cost $30K or more live their entire lives out in the weather, 24/7. Before I would even think about spending that much (or more) on something to drive, I would reassess where I lived and why it would need to sit outside. If I couldn't garage it, I would reassess what I'll drive and how much I would pay for it, but that's just me. I realize everyone has different priorities - Many people living in condos and rental apartments drive $50K (or more) vehicles which sit outside with the sun and the weather beating them up every single day. Very different priorities
If your vehicle is garaged, a yearly coat of something like Turtle Wax Ice is probably all it needs - Cheap, easy to put on, even easier to remove and keeps it looking very nice *if* you don't have the sun and weather beating it up 24/7. If you have a nice vehicle and no place to park it out of the weather, something more suitable and expensive probably needs to be used and probably more often than once per year
Don