Hello, After being a member here for just about a full year now, and trying to keep up with all the good folk's posts, what's current as far as fantastic products go, it truly is more than mind boggling!
There are so many great products, most of us could recommend-suggest literal dozens of absolutely killer products.
For the more conventional type Paint Sealant, and Wax products, all, such as Collinite, Wolfgang, Detailer's Pro, Blackfire, Menzerna, Duragloss, Chemical Guys, Poor Boys, Dodo, Optimum, the list goes on and on and on....please forgive me folks that I've missed and omitted another 5 dozen great products-manufacturers.
I think you get the picture, it can be confusing which to honestly pick-choose, just boatloads of fantastic products here, and Autopia.
If you're looking for the absolute "minimum" of maintainence, which will last a looong time, offer the very best to be had in protection, then as others have mentioned, a Coating Product from the likes of Optimum, Carpro, GTehniq, and last but not least, Detailer's Pro, these would be actually more economical in the long run. Less work on you, less upkeep, and re-application needed, and offer better all around paint protection.
The Detailer's Pro Paint Coating is a more recent product available, is quite easy to work with, and offers good value, and ease of vehicle maintainence. I like it!
Don't forget plastic trim, and rubber. These take a beating as well from the elements, I really like the Carpro CQuartz DLX Trim Restorer, and other products like Optimum Opti-Bond Tire Gel, Ultima Trim-Tire Guard, and Wolfgang Exterior Trim Sealant.
All are very fine products that will ease your involvement, and maintainence, and offer much better, and longer protection versus anything you will find on Auto Parts Store's Shelves. Run from OTC products loaded with silicones, they are more hassle, and expense in the long run, and can actually damage such parts.
Glass, is also not only a maintainence item on a vehicle, but can also be a very important safety item, and many manufacturers here make Glass Coatings, and Repellants which enhance vision in various severe weather conditions, rain snow, and enhance wiper performance.
Even a product such as Rain X is IMO better than no Glass Product at all.
There are others which work as well, and even better, and last longer.
Enhanced vision, and the safety that can come from it often can have extremely high value, which one cannot put a price upon.
Hope this helps,
Mark