After much research, I wound up buying Werkstat Prime Strong and Acrylic Jett for my Mazdaspeed3. The car is parked on the street near the beach in LA, so I went with the prime strong for maximum cleaning and protection.
The car was delivered washed and waxed, but had sat on the lot for several months and had some grit embedded in the surface. So I clay'd it. "Oh, so that's what the paint actually looks like!" So far so good.
Prime is very easy to use if you RTFM. If you use too much, enjoy your workout! I, of course, used too much, but when I was done my thoughts were "Oh, that's better than what the paint really looks like."
After 30 minutes I applied a thin layer of Acrylic Jett. Holy crap. The car got brighter and the metallic really popped. Wiped it down the next day and did another pass. Better. Wiped it down a few hours later (their instructions say 30 minutes is enough), and did another pass (it's easy to use). Slight improvement. Later that day I did yet another pass and it looked the same - great! Better than factory, it's truly a paint enhancer not just a sealant. 3-4 layers are perfectly sufficient.
Then I topped it off with some tan bottle Meguiar's "carnuba" something or other I had lying around. Oooh, I liked it. The Werkstat stuff doesn't need a wax for protection, and if you want a nice bright look, you can easily live without it. But because the car is a dark color, the wax just made it look better in every way. Darkened up a bit and contours were revealed better.
A month later (today) I found an un-opened tin of Blitz wax that was in a box for a few years. I wax my car every month anyway, so I went for it. Took it to a self-wash to get the old wax off, without starting from scratch, then drove it wet to a commercial hand wash place I like. I hit it with their freakin' tire cleaner on the paint and the water just kept beading. The wax was gone no doubt, but the Werkstat stuff underneath just wasn't phased by the powerful detergent. And while watching the car go through the strong detergents the commercial shop uses, and it was STILL beading after the rinse, I was stunned.
The Werstat stuff just clings like nothing I've ever seen before.
Awesome product. I sprayed another layer of Jett, waited half an hour, then applied two thin coats of Blitz. The finish leaped from Mazda quality to BMW quality. It just glows, with a wet mirror finish and no metallic muting at all.
So ya, I guess you could say I'm a big fan of those two particular Werkstat products. Haven't tried any of ther other stuff though, and can't think of any reason to since I'm happy with I already have, and money's tight.
Anyway, I'm now a VERY big fan of acrylic polish and sealant under a quality carnuba. Tried and true meets brand new, and it works. Everything is reasonably priced, they deliver them quickly, they're easy to use (I do everything by hand), and is extremely durable.
This is soooo much better than the old days of just using various polishing compounds, glazes, and mystery waxes! Assuming I stay on schedule, weekly hand wash, monthly commercial hand wash (I don't do vacuums), monthly waxing, quarterly treatments of Werkstat Prime Strong and a few layers of Jett, followed by a quality carnuba, I expect my new car to glimmer and glow for many years to come, even though it's parked on the street in Los Angeles.