These are 5 machine makes that I think make up a good representation of what is available for CNC Swiss machining. They are Citizen, Hanwha, Star, Tornos and Tsugami. These are not the only makes out there, but they are all top machines and are supported well. If you are a first time buyer and do not have a lot of swiss machining or CNC experience, you will definitely want to look at the support group you will be dealing with.
Early on, when I was buying CNC Swiss, I felt best staying with one maker, but as we gained more experience with the constant pressure of needing to be ready for anything, we now have different makes of machines.