New vice for Sieg SX2

[Goldigger]

Hi I need a new vice for my Sieg SX2 mini mill, my current vice lifts up one of the jaws when i clamp up things at the top of the jaws.
Has anbody got any recommendations? How big and heavy can i go?
I've been looking at these tool makers vices..

And this vertex 4 inch


Thanks

[port_huon]

I've got both style vices on my X2.
I tend to use the Vertex style one more than the other but I've never used the rotary part of the vice.
I find the toolmakers vice quicker to set up and get square.