From memory for some.
In term of overall SQ = D2000->780->580->DT770->XB700->700MKII(not tried)
Fit = DT770->D2000->XB700->780/580
Soudstage = D2000->780->DT770->580->xb700
Bass (no ranking) = quantity = 580/XB700/DT770/700MKII (apparently)
quality = D2000/780