I have a Pedros folding stand. And it's the best I've used.
The squeezy-trigger grip is easier and faster to clamp a bike. Much better than the worm-gear screw type most stands use. It doesn't slip, and will clamp any size round tube, and most oval and oversized tubes.
I use it everyday, all day, assembling bikes at walmarts, and it'll hold 99.9% of bikes.
The clamp easily swivels to any angle, to grab a seat post, seat tube, top tube, etc.
It also has a quick release thumb button so you're not fidgeting with the release while holding onto a bike.
You can change clamp positions in seconds, so it's ideal for bike assembly work.
It has held all of my heavy ballooners with no problems. And you can adjust the position of the bike easily, even if it's partially assembled and off balance, like if you've got a heavy springer front end and you take the back wheel off, it won't slip or flip over.
Folds up about as compact as you can hope for, and I've had thousands of bikes on it (about 30-40 a day) and all the moveable parts are still tight and functional.
So, that's my testimonial...