Looking for a good pair, what should I buy? Found this article, sure would like some recommended brands to look into.

Corkers-Corkers are sandals with spikes on the bottom and straps that can be worn over the top of
wader shoes. Corkers provide a great deal of added traction in slimy, boulder filled waters.
Considered a little heavy by some they are an invaluable piece of footgear if you spend any amount of
time in that kind of environment. The spikes are replaceable. Some anglers will even drive small
round-headed screws into the bottom of their waders to provide a similar effect.