I just switched to a 4 day split... I do chest/back/arms one day and shoulders/legs the other twice a week. Very simple routine. CAB day is bench, weighted chins and then a tricep push down/curls superset. Shoulder/legs day I do a heavy set of either squats or military press and then do a range of other moves. Pretty short.... 40 minutes a workout. And I feel it's pretty effective, well so far anyway.