Just recommending waxes/polishes-
I've tried a bunch. And I know a lot of times it makes a difference if you can get the stuff or not and price points, etc., etc., but here are two that IMO, the final results are stunning.
I like the Zaino system myself. Once you do the first prep and polish, it's on easy street the rest of the way, and lasts a VERY long time with super-minimal upkeep. Especially if it's kept in the garage. It's like a micro-coating but when done right, the results are very very nice. A tiny bit goes a long way.
Although not a sealer type of coating (save for their ceramic coating as I've never used that), Adam's general line of waxes/polishes is another great group of products I've used in the past with nice results, although it's not designed to last super long. They do use carnauba in their wax. It really comes down to what you like best, though.