Just started this a month or so ago and loving it.
day 1 - quads
day 2 - chest and calves
day 3 - back and traps
day 4 - hamstrings and shoulders
day 5 - arms and calves
off sunday and monday, do abs at home when/if I do them
My mind is fresh, muscles are sore and motivation is peaked at this time. Splitting my leg work up into 2 workouts has made a huge difference and it seems I'm blasting them much harder.
Highly recommended!