I have the Deluxe solo seat from CMW in tan. Originally, with the std 5" springs, it was too tall for me, so I now have the 3" springs. It is comfy in that it does not have "buzz-Butt" like the stock seat does (which I cannot stand for that reason). The one thing I wish I had done was to pop for the Premium Deluxe, as the lines are smoother and without the bead that can catch on your britches or cause an irritation on a longer ride. I also think the profile is more sensuously, butt pleasing on the Premium (at least from the looks).
As for pitching forward, I do sometimes find myself sitting a little forward on the seat but that's not due to angle, as I have the shorter springs and the seat cups, more like a saddle. I think it is just me carcass moving around on the seat (maybe to avoid the beaded edge?). Also, long standard springs make it seem like you're riding a hobby-horse. Get the shorter ones, if you go this route.
I purchased the black sprung pillion (matches the Lysette) for my wife and she is very happy with the ride.
No, I would not go back to a solidly mounted seat at this time, although I like the looks of the British style dual with white beading.
As for long time in the saddle. I used to take 400-500 mile day trips on my BMW R90 with a great saddle, but even in those days I needed to give the legs a stretch every hour or so, or stand up on the pegs and air out from time to time. Gosh, I can't even stand my living room couch for two hours.
-Jesse, "Happy Butt, Mcgee"