This is what i use. It's 2" wide and flexible. It never fails. Nothing ever falls as long as the surfaces you apply it to are clean. Really clean like you cleaned it not like it "looks clean".

The only problem with it is that its difficult to remove the device without a tool. (same can be said about zip ties) I use a frosting spatula. Carefully work it between the Velcro to separate it.

I stopped using velcro for anything...Because once you see the error of your ways, you realize velcro isn't as good as it can be.

The answer? 3M Dual Lock.  It looks like velcro at first glance, but you realize the difference when you attach the two pieces and feel them interlock.

I only found this stuff because a buddy of mine works at 3M

That's what I use.

I use these on pretty much every job.. Pretty much the same thing as the SnapAV piece..

[Link: intuitiveusa.com]

I know you're kidding, but plastic molds are lubricated with a mold release agent before the plastic is injected. The molded piece might get wiped, but all that does is thin and even out the layer of release compound. It doesn't get the plastic actually clean.

If you opt for dual lock, you have the same stickum-to-surface issues. Also, try out dual lock before you use it on a project. If you use a lot of velcro, you can peel it a bit, getting it to release in portions. Dual lock has to release all at once, so if you use the same area of dual lock, it will be MUCH harder to separate the parts.