I have the Juki 2010. it's sold as almost completely mechanical. So to have the thread cutter, needle stop down, and speed control I need to spend another $400 on a $1000 machine.
the good part, I learned how to disable the electronics (which were causing the machine to do strange things), so now I have a fully mechanical machine. It works just fine, I have to manually turn the wheel if I want the needle up, and manually cut the threads. At least the needle threader and knee lift are mechanical to start so I still have that! The bobbin winder still works too, I was worried that might be tied in with the electronics but it appears not to be.
To be honest, had I had the option of paying $600 for it to be fully mechanical machine, I'd have opted for that. I was very upset when the machine started acting up because it was very difficult to use with it malfunctioning.
if you take the top off, there is an electrical connection that plugs into the top. when that is not connected, it disables the electronics.