differences between Amaya machines

[shanarchy]

Hello all,

I'm looking into the used market and considering getting an Amaya.

It looks like the Bravo and XTS are the current models with the XTS the higher end model.

What are the differences between the regular Amaya, XT, XTS and Bravo?

What should I be looking for when looking at a used one?

I have a screen print shop and this will be our first attemot at embroidery.

Thanks in advance!