I recently renewed my collecting of used US, and decided to take them out of stockbooks and glassines and place them in a real album. Printed out the Steiner pages and dipped into my precious hoard of several dozen Dennison
hinges inherited from a relative. They worked like a charm, but I needed more
hinges, and didn't really feel like paying $20 for a packet of vintage Dennisons on
ebay.
So I took the plunge with the Prinz
hinges from Mystic (hard to beat the price at $3 for 1000), and I have to say that they're not bad (so far, at least). I did a few tests with some duplicate stamps, and found that a good method is to wet the back of my hand or a sponge, apply a little moisture to the hinge, and then blow on it a few times to dry it out a little. I do this to the lower third of the back that gets applied to the page, too. Very minimal moisture.
After a few days, I then tried peeling the stamp off the hinge, and the hinge off the paper, and voila - just as good as the Dennisons, with nary a trace on stamp or page. I'm satisfied so far - here's to hoping the quality isn't variable!
I think The Artful Hinger said it best a few replies ago: it's all about how much moisture you use. The modern Prinz
hinges are just as good as the Dennisons at adhering the stamps to the page, and perhaps they might even be superior, assuming the materials they use are acid-free and the Dennisons aren't. But, they're just less forgiving - the acceptable "window" of moisture you can apply in order to maintain a peelable hinge is smaller, that's all. So it just means a little getting used to, but practice it several times on some throwaway stamps and you'll get the hang of it.
The reports of stamp hinging's death have been greatly exaggerated, and I for one am greatly pleased that these exceeded my expectations!