I tried the 1 body part a day, hated that split.
I do 3 total body workouts a week, 1 powerlifting, 1 olympic lifting and 1 Cross fit.
All followed by 20 minutes of LIC (low intensity cardio) swimming, heavy bag, etc..... except the crossfit workout, I do nothing after it.
Love this split, maximum results for strength, fat loss and muscle building in the least amount of time.