There's lots of good products out there. The tough part is finding one that does good in all 3 areas - quality of shine, ease of application, and durability. I've been a big fan of Meguiars products and used tons of them in the past but the one item I've found that stands above the rest is Meguiars #21 - Meguiar's Direct Mirror Glaze Synthetic Sealant 2.0
- although I now buy it in the gallon jug rather than the quart because it's more economical.
Carnuba waxes give a great shine but aren't very durable. You need to keep on them every few month. Meguiars Synthetic Sealant is good for a full year so you get 4 times the life out of it, which minimizes my workload and maximizes it's protective life cycle. It also gives a great shine so that's two out of three so far.
The last is the ease of application. I've never seen any other product that was this easy to apply and still give a shine and offer durability. This purple slop is applied and then is easy to remove without requiring very much elbow grease or having to worry about it caking up. It also doesn't leave a powdery residue that you find the next few days where you missed a few spots when buffing it off. So that's three out of three. I haven't found that in any other wax or polymer sealant.