I don't think one or the other is "better" so much as it is a matter of personal preference. I like to mix it up and do both--hard and quick sometimes, long and easy other times. Each has its own set of benefits from all that I've read. The main thing is to do something that you will stick with and not quit out of frustration or boredom.
Denise (Half Fanatic #1279) - PDT Time Zone
"The greatest pleasure in life is doing what people say you cannot do." - William Bagshot
Personally, I would go easier and just throw in a few minutes of intensity now and then. I know "they" say that the old fat burning zone is a (sorta) myth because you burn more calories and more fat calories doing a long high intensity workout than you would a low intensity workout. However, if that high intensity knocks you off your feet in 5 minutes while you can go for an hours at a lower intensity ... Same as with many things, it all depends on the individual. You have to do what works for you. Try doing what you can and then try to improve on it, even if it is just adding an extra 30 seconds each time.
If cardio sections get too much for me (intensity or just coordination), I just march in place, whether a plain march or a more dancey march with zumba. That way I can catch my breath while I still keep moving and you can vary it a lot, depending on need, with different speeds, knee raises, arm movements, etc., so it can be as mild or energetic as you like.
Edit: I didn't really answer your question. If you are enjoying the videos that you are doing (other than keeping up with intensity), keep doing it and just march in place when you need a break. If it frustrates you to the point that it is no longer fun, then I would consider doing something else. For me, if I am not enjoying myself at some level, I won't keep with it.
I have been doing some rather intense workouts, like P90X, Turbo Fire and now Tapout XT, but I can only do like 5-15 minutes at a time before I have to stop for a bit. I always go back to the video and finish, but I am wondering am I better off doing extreme workouts like this in short clips at a time, or an easier workout where I could go from start to finish without stopping? THANKS!!!!
SparkPeople, SparkCoach, SparkPages, SparkPoints, SparkDiet, SparkAmerica, SparkRecipes, DailySpark, and other marks are trademarks of SparkPeople, Inc. All Rights Reserved.
SPARKPEOPLE is a registered trademark of SparkPeople, Inc. in the United States, European Union, Canada, and Australia. All rights reserved.