Aerobic training

Which is better? Aerobic training (long distance running, stints on the Stairmaster) or anaerobic training (weight training & short intense conditioning work)

I've been asked this question hundreds if not thousands of times. First I'll give what I think is best and then I will talk about whether what I think is best even matters.

I my own professional opinion and from my experiences I believe a combination of strength training exercises (with free weights, machines, or bodyweight) and high intensity anaerobic exercise (e.g. Sprinting, running up hills, or stairs etc... have yielded the best results for me and the people I've worked with. I'll take it a step further by just looking at what the elite athletes do. The first thing that comes to my mind when it comes to ideal body composition (low body fat levels) and weight loss are long distance runners and sprinters. Marathoners run and workout for what seems like forever. One hour runs 4 to 6 times a week are the norm for many of them. Combine that with strength training (which many won't do because they're too tired and over trained from running) and you're working out almost everyday. Sprinters on the other hand use short intense workouts to build their speed. Many sprint 2 to 4 times a week for about 30-45 minutes and strength train 2-4x a week for about 30-45 minutes. Many times it looks as if they're not even training hard because they rest a while between their sprint sets.