I use flash (Speedlights and Strobes) quite often and havn't used the PC port on a camera in well over a decade. The PC connections have never been 100% reliable anyway so there is no great loss. On the other hand, I have found the hotshoe and Pocket Wizards to be extremely reliable. With regard to the 1/3 stop loss of sync speed, the world won't end because of it. The D600 has FP High Speed Sync mode and I suspect that HyperSync mode on the PW MiniTT1 and FlexTT5 should make it moot when using strobes. Good Luck and Enjoy your Nikons!