http://www.afv-model.com/4711shop/in...be4f2361ebcdb3
This is a good place to look.
Wedico just started out so I am not sure if they have it without issues.
You didn't mention O&K. From Damitz they now have 2 where the second newer version looks a bit like a CAT.
Vario am not sure about. Not alot on the grape vine.
BTW: the Liebherr can have a britax transmitter but I've heard that there are issues with the signal. However the idea is very good, so if you're up for it. Mod a transmitter adding futaba's boat motor dual lever control. Wire it into the switches, replacing them. Will give you proper control for tracks and separate boom,jib,bucket and slew control. Like the real thing and there fore do the tricks of the trade.
I'll be doing that once I have mine.