Have not tried it myself, but the Vergo from Trango seems like a good replacement for the Cinch.
Some info here:
http://www.trango.com/p-337-vergo.aspx
Recommended Single Rope Diameter: 8.9-10.7 mm
There's a mod for the Paintin if you dont want the rope to pop out so easily:
http://www.treestuff.com/store/catalog.asp?item=15742
I bought a Quick step from CT since I got tired of the Pantin. Rope never pops out....
http://www.treestuff.com/store/catalog.asp?item=2230
The saddle looks a bit like kolibri-click from Skylotec.
http://www.treekit.com/kolibri-click.html
That's what I'm using. Really nice saddle.
http://www.treekit.com/media/catalog/product/cache/1/image/700x700/9df78eab33525d08d6e5fb8d27136e95/K/G/KG41-C_kolibri_click_frontal_2.jpg