I personally am on DC 3 split training. So I do AB, CA, BC, etc. On C (leg days) I take the day off from cardio. I'm at the gym 4 times a week for lifting, and then 3 - 5 days I'll do cardio, depending. I also enjoy doing it in the morning, so by the time get to lifting, I'm no longer exhausted from my HIIT that was done in the beginning of the day, and it will also not force me to be at the gym for long stretches of time.
I have tried the slow and steady approach too while fasting, 60 minutes 12% incline 3.8 mph walk. Would burn around 800 calories with my heartmonitor. Or I could do HIIT on the same 12% incline, 1:30 at 3.3, 30 seconds at 9.0mph and then burn 850 calories in 25 minutes and then go chill in the hot tub for 20. Matter of choices I guess.