>>106342835
It's a Charybdis. Apparently they don't sell that model anymore, just the MK2.
At least the MK1 (the one that I posted in >>106336962 ) is pretty good. The only problem is that the pulleys inside the trackball often gets too greasy, even if I wash my hands before using it. I try to clean it, but it is not that easy even if you have the right tools. That's the only negative aspect. Not sure if they changed that on the MK2 though.