Aesthetically speaking, the best I've seen is
Streamray but you don't like the current Zango relationship I'm aware of that.
AWEmpire If you don't like the cookie expiration on pct then they are now doing PPS with cookies that expire in 48 months which resolves that. You can go in to customization, and choose only Fetish category & PPS there if you want.
Webcamcash
Has co-branding with pre-defined skins. You can also contact them if you want to make your own skin.
Webcams.com does not do co-branding per se, but you can get one of their designers to create a custom join page for you which could be co-branded.