"The Strato II Multi by Phottix radio flash trigger.
I was photographing in Indiana Caverns when my flash fell 45 feet into a pit. It hit the pit wall about ninety times or about every six inches. It just wouldn't stop hitting and land on the bottom. To top it off it was an archeological site and it had to lay in the wet mud overnight until a trained person could get the flash. The Vivitar 283 was trashed but the radio trigger works just fine. The Strato has been on about twenty cave photo trips and has worked perfectly. It is one tough piece of gear."
"I love the ability to add color and balance my light all while keeping the FXtra on my flash. I never take it off! Just pull the gel out when you aren't shooting. This is the perfect solution since gels are easy to forget!"