I was totally in love with my Juki2010 until the electronics went out after two years of use. I figured out how to disable them so I could continue to use it. I also didn't have local support and got quoted over $400 to ship it to Juki and maybe have it fixed (they weren't sure). I've heard from others that their local dealer fixed the same problem for about $100. Shows that local support can be a big plus.
I finally got tired of it, and bought a Juki8700 with no electronics and I love that machine, but have no idea if one could FMQ on it. I have an LA so didn't need that. The 2010 is now mostly a bobbin winder since that is a real pain on the Juki8700. Knowing what I know now, I'd have opted for the 8700 to start with (is cheaper too), but again, I don't have a need for FMQ so did not consider that.
I never had trouble with the Juki threader, it took a few tries to get the hang of it, and you do need to have the thread in the right spot or it won't work. I do miss having a needle threader a bit, don't miss the speed control one bit as I have very good control with the Servo motor on the 8700 ( I have it turned way down) and don't miss the needle down or the thread cutter.