Some of the recent discussion on isometrics has me wanting to give the isometric belt a go again as a finisher to my workouts. I even checked out the John Peterson forum again, something I haven't done in several years.
I see John is giving the belt a lot of play which is good. Some years back he was wanting to shuck it for a cumbersome medieval torture device with two bars and a kevlar strap you ran the bars through. I told him it was a mistake and people would get hurt on it. The belt was simpler, safer and more versatile. I have to laugh though. I doubt he'd ever admit I was right about that.
I am glad he decided to hang with it. It is a great piece of equipment. I use a cutdown belt almost every workout for self-resistance and will start using the full belt again for Isometrics.

I have two isometric belts. I prefer one that is a suspension/isometric trainer which has loops. It's made by Sierra Exercise Equipment. This is just my opinion, but the Power Belt is a little expensive. The material of the belt is very strong and it's ok. But I prefer the one I have with loops. If someone is handy at making things it would be pretty easy to make You're own belt at a much cheaper price than any belt sold. I'm sure there's better ways but here is one: http://rosstraining.com/blog/2010/01/13/homemade-suspension-trainer/
John, what are the other devices You use for isometrics?