Wet Diamond is my favorite synthetic sealant. Of coure, that may not such much, as I've only tried two other sealants (Reflections and NXT). I find it extremely easy to use.
I generally go the WOWO route, though this fall when I apply my two winter coats, I'll probably go with the whole wait until it fully dries before buffing off option. Two coats took me through much of the winter last year and I expect it will do so again. But we hit a day of warm weather in February (I think), so I took the opportunity to wash the car and then applied a coat of Reflections, maintained by Ultimate Quik Wax.
Wet Diamond gives a warm, reflective and slick finish. If there are better sealants out there, I really don't need to know about them.
At my spring detail I applied a coat of Wet Diamond, followed by two coats of Midnight Sun. I honestly cannot say that Midnight Sun truly adds anything to the Wet Diamond look. HOWEVER, I will say that this Fire & Ice combo generated two super-positive comments from people in two different parking lots. It gives a different look than, say, Souveran. It's a wetter look, I think. It really catches people's attention. Sometime in the future I'd like to try the Wet Diamond topped with Fuzion. I have a feeling that this might be an excellent combination. BUT ... Blackfire Wet Diamond stands on its own and does not need to be topped by any carnauba wax.
As we get into the summer months I do not use the Wet Diamond. I have too many carnauba waxes to try. I don't need to the extra durabiity that a synthetic sealant might provide. I will occasionally use M20 in order to clean the paint, which I then top with my flavor of the week. Souveran has been my August wax for Luthien. I love it. Next month, I'm thinking of trying out Victoria Concours Red. And in October, I'll use a pre-wax cleaner (probably Ultimate Pre-Wax Cleaner) to cleanse the paint and prepare it for two or three winter coats of Wet Diamond. I am wrestling whether to top Wet Diamond with FK 1000p or Collly 476s. Does anyone have any ideas? I think I prefer to go exclusively with BFWD.
Al