None for sale here, just a recommendation. I have had a set before and now have the type made by Bowflex. The Bowflex ones are much nicer. I got mine at Sports Authority. The set goes up to 50lbs.

Which ones are more durable?

I've got to go with the Bowflex. The pair of Powerblocks I had were circa 1999. I haven't seen their newest. The Bowflex pair also feel more stable(like they aren't going to fall apart in mid- press and crush your face).

Now that's the kind of recommendation I appreciate. Safety first man, safety first. I saw some of the Bowflex on display at Sport Chalet and they were destroyed, but I will head on over to the Sports Authority and check them out again. Thanks for the heads up.