Modded Players....

any comments on the Reference Audio Modded DV-50 S / the APL 3910/ 5910 or the Underwood modded 5910 ?

I´m in a state of totally reconfiguring my system. Any comment is highly appreciated. Currently run a caps modded Audio Aero Capitole MK II - so the modded unit has at least to surpass the AA´s performance..