I asked around before I purchased and most people told me a kurt was the best choice.
Most were modifying the 6" to work on the tormach and I didn't want to even consider that with a new expensive tool.
My thinking was I purchased a system why not add to it with tools that are made for it. I ended up with tormach 5" and the choice has worked out well.
I might have paid more for the tool or tools but a system that works saves much more then money. Time, frustration, problems and mods to make it work add to the cost of anything.
I must admit I lack long term experience with cnc systems and for me a proven setup is appealing and fun for that matter.
md