Please do share more of your thoughts on your new flashguns!
I bought my most up-to-date flashgun, a 580EX II, early this year, shortly before the 600EX was announced. I am interested in the 600EX, but early Spring of 2012 started a frugal period for me, that will last until some time in 2013. I am going to be reading all I can find on the 600EX and the newest Pocket Wizards. The latter have my attention because I bought several pre-owned Nikon SB-80DX and SB-800 flashguns, with the intention of using them with my Nikon film cameras and my Canon DSLRs. I do not call myself a Strobist, yet, but have certainly been influenced by viewing the Strobist site, and repeatedly viewing Zack Arias' excellent One Light DVD.
I do use my 580EX II, 580EX, 320EX, and Nissin Di866 II off-camera, with an ST-E2 on the camera, but cannot claim any level of expertise much beyond the beginner level.
Canon 5Ds R/7D2/7D/5D/40D/1D2N; Nikon F6/D3s/D700/FM3A/Coolpix A. Lens selection undergoing changes; some favorites: Zeiss 2/135 APO Sonnar, Canon 100mm f/2.8L Macro IS and 135L, Nikkor 14-24/2.8G and 200/2 VR.