I just got a pair of PocketWizard MiniTT1's and four FlexTT5's for my SB-800's. I'd been using the Nikon SU-800 Wireless Speedlight Commander, and it was pretty good in confined spaces where the infrared signal could bounce around the room. However, I'd often have to reposition/turn flashes so that the flash "eye" would pick up the infrared signal. Certainly, I couldn't hide the SB-800's behind furniture and whatnot. And, of course, the SU-800 was of no use outdoors for other than macro shooting where the flashes were very near the SU-800. The dog pik was shot with four bounced SB-800's positioned around a large, open room. The MiniTT1 device was on a D700 hot shoe, with the SB-800's sitting on FlexTT5's. I deliberately placed the flashes behind furniture, an HDTV and stereo components, but the FlexTT5's had no problem picking up the MiniTT1's signal. So far, I'm quite pleased with the PocketWizard rig in comparison with the SU-800.