i cant tell you from experience, as i lift to get as strong as possible which means adding mass, but most of the literature i've read and the mirror queens in our gym seem to agree that if ya wanna look good you need to do fewer reps with more weight. i know its the opposite of everything you've every been told but there it is. apparently anything over 7 reps adds mass. so your first set you would do as much weight as you can such that you reach tmf on the 7th rep. then on your next set push out as many reps as you can at that weight. you wanna do a total of 4 sets, 3 really isnt helpin any.

if ya want to make things more interesting work one muscle group and then instead of resting between sets work the opposite muscle group. so do bench, then instead of resting do your back, the idea being to not rest till you've done 4 sets of both. it'll actually cut lots of time off your lift.