I havent used used the porper clip, but I use the Ellusionist clip every day, and I love it, it's about half the price of the Porper.
http://www.ellusionist.com/product/stainless+steel+custom+card+clip.do
great topic Dan!
I think what the younger generation can learn from the older generation is that not everything has to be all fancy. We can preform an old effect and get better reactions as something new. Also, almost everything we have in magic now is based off of the older generations...