yea, i think pendays are better than standard bb rows -for sure... but i reeeeallly like low pulleys as my second choice to the one arms...
you could always do 1 or 2 sets of each...
i do this workout on sunday:
"deadlift sunday"
3x3 deads (takes 1/2 hr plus with warmup and rest)
standing mil press 3 sets
one arm db rows 2 sets
low pulley row 2 sets
db pullovers 2 sets
a set or two of various curls
the deads pretty much warm me up for everything else, and the sets are heavy and hard...