Workout DVDs !

Hi there. So I am looking at getting my first workout DVD & trying to decide what one. I see below good raves for the 30 Day shread but I also read a post about the Chilean ones. What would be best - has anyone tried both & can compare?

Basically I want to tone up and lose a few inches. I do a lot of walking ( to/from work and walking dogs) but I need something with a bit more punch to get those inches off. I am late 30's if that is of any relevance

So any suggestions? And do I need extra equipment? and finally are some of the videos on youtube? just to get me going while I try to get a copy of whatever one I want.

Thanks !!