I know calories used meters on treadmills are not completely accurate but this is why I say there is an after burn to cardio. I'm not alone in my beliefs. A pound of muscle is 600 calories and a pound of fat is 3500. Many times when I have done cardio after not using it for awhile the amount of weight that comes off can't be accounted for by using calories burned so there has to be an increase in metabolism and fat burning after the activity. So let's say I used 400 calories a day running on a treadmill for 5 days a week. That is 8000 calories used for the month. It should account in a perfect stable mathematical formula of 2.2 pounds of fat lost. What happens is that I will lose 10 pounds of fat using hydrostatic weighing. How did that 400 calories a day account for the weight loss? There has to be an increase in calories used after the cardio activity which contradicts a lot of old research. On a side note one of Arnold's secret weapons to getting ripped was secretly running with Roger Callard back in the day.
The best thing to do IMO is Cardio in the early morning (regardless of whether or not it's more effective) and weights later in the day.
I can run and then lift, no way in hell can I lift and the run. Do more exercise, eat less - it all works out.