I have one. I bought it about four years ago. I think I used it maybe three times.
Nothing wrong with it. It's just that after awhile it made more sense to me if I wanted to go minimalist portable, to just bring resonant antennas or tunable antennas, and leave the tuner at home. So, I have made up several
W5ALT Travel Antenna for 20, 15 and 10 m when I need to travel light. And I have a
Superantenna MP-1 when I can bring a little more with me. THere are other similar base-loaded portable antennas, or you can build one yourself e.g.
W5ALT Indoor Vertical Antenna. #The point is that if you have an antenna that is close enough to resonance to give 2:1 or better, or can be adjusted, you don't need the tuner.
Having said that, if you're still interested in getting a MFJ 16010, I'll let you have my almost-unused 16010 relatively cheap. Email me.