If I were you I'd be looking very hard at Trotec. Trotec build quality is what sets it apart. Mine is 11 years old and runs every day--I'm not a hobbyist. In 11 years I've been down 5 days--4 of which were to have my tube rebuilt. Trotec tech support is all I've used. These are fairly simple machines and not hard to work on. I've found that to be true of ULS and Epilog as well.
I have two larger competitors whom I know fairly well. One has 4 Trotecs; one has two and is considering a third.