Sun Tracker (and all Tracker products) is a great boat for the money. It's a package (boat, motor and trailer) boat and that has been Tracker's claim to fame since day one. As far as Sun Trackers go, they have as good of a warranty, if not better than, most other pontoon brands on the market (limited lifetime on the deck/structure and 10 year bow to stern). Pretty much every pontoon brand out there will give a "limited lifetime" warranty on the deck/structure of the boat but not everyone is giving 10 years bow to stern. No, Sun Tracker doesn't have quite as nice of a fit and finish and they may not use "high-end" materials for their interiors and they may not have as many options, but they stand behind everything they offer. Plus, like I said, it's a package boat.
Another nice thing is Tracker (White River Marine Group) sets the price for their dealers and that is the price the dealers have to sell for. Takes a lot of the "shady salesman" vibe out of the process.
Congrats on your new boat.