The best thing is whatever you can do a solid intensity for the longest amount of time. For me it's been the eliptical because I can plug the headphones in and listen to music or watch the tv and go easily hand free and get on EF, news, email with my phone.
I put HIIT in another category and I do it on the bike, eliptical, stairs outside my gym, and treadmill. HIIT is 15-20 min for me, Cardio is 45 - 60 min.
The one that I wish I did more and is still a fantastic calorie burner would be running hands down. If you really want to lean out, then sign up for a 5k or even a 10k and get on something like the hal higdon training program for that race distance and you'll get there.
I put HIIT in another category and I do it on the bike, eliptical, stairs outside my gym, and treadmill. HIIT is 15-20 min for me, Cardio is 45 - 60 min.
The one that I wish I did more and is still a fantastic calorie burner would be running hands down. If you really want to lean out, then sign up for a 5k or even a 10k and get on something like the hal higdon training program for that race distance and you'll get there.