I have really loved Next Launcher and before that Go Launcher. I've used Nova and ADW and just didn't find them any better than various stock or trebechet (sp?). Unfortunately, Next is expensive (although it is on sale right now). I also have observed that EVERYTHING is getting more and more expensive.
The themes I've used and liked are a combination of free and paid. Love the memscape themes but to theme every app I could with say, New York - expensive! My faves are probably the cobalt themes for cm roms and go sms but they do not have launcher themes. The Go folks, e.g. zt.art, have decent free themes.
On my One I am currently using the Next 3D scene mode with Steel 3D (faisca art - They also have a beautiful Christmas theme both classic and 3D). I simply can't afford to try more.
Sent from my GT-p511x