I do barbell curls with 35kg. 3 series, around 7-8, 6-7, 5-6 reps, depending on the mood. Really tears my arms apart, practically don't do anything else for biceps. Perhaps a one or two easy series of some isolation. Don't get folks who torture biceps, triceps with like 10 series, like they're working legs.
Chest/biceps in about 10 mins.