I just heard that Pocket wizard came out with new shielding system. I’ve been using new pocket wizard for couple of month now and I have mixed feelings about the units. I trust plus II and it will trigger 100%. However, new flex TT5 has some issue with RF noise. It doesn’t fire all the time. The pocket wizard came out with shielding idea and the first one was made of plastic and it’s kind of weird bring it to paid gigs. The new prototype that Mark Wallace showed in his blog looks small and easy to move 580 EXIIs around, but I personally don’t want to use Pocket Wizard Shield in front of my clients. Hope pocket wizard fix this bug soon.