I've used procure a few years now and it's better than what I used a long time ago.
I doubt if any brand is significantly better than another - just think it's great to have around and smart to use - I can use DEET, sunscreen, smoke cigars, and not worry about it.
this an early July Kasilof float, btw
if you want to see more
http://www.corpusfishing.com/messageboa ... hp?t=37636