I have a Dentrom MT-3000A now for a while. Picked it up as a tech special, someone removed the swr board
so the meters were not working. Was able to put in an aftermarket swr board, as well as new meter switches
a ham is selling new for these, as the buttons have a habit of breaking. So far no problems, but I hear on 160m
its capacitance is a bit marginal on the low side of the band, and some have added in additional capacitance as well
as removing the internal resistive dummy load, and making an extra jack on the back for an external one.
The internal voltage balun for the open wire / balanced feedline is a bit shakey once you are on 40m and above,
but on 80 and 160 it does well.