I'm in general agreement with the order of preference - MF/WAD/TACT/Glass - except in one crucial area (for me) - timing.

I thought the WAD was a tad tighter and more propulsive on rhythms but it gave up some detail and spaciousness to the MF for sure. The differences wouldn't make me want to change at this stage though. Thorsten suggested a small mod to the WAD to improve performance so I'll give that a try.

As ever with these things, so much depends on impedance matching, particularly with the simple 'pot in a box' type units which can sound excellent in one system and dire in another.