I've been using Buff stuff for close to twenty years now. I've got seven flash units, Alien Bees, White Lightnings, and Einsteins. They're all Cybered-up, and I've got two Cyber Commander controls. I've always been satisfied by their performance and by the company customer service, which I've used more than once when I've screwed something up. The Cyber Commander flash unit is small and fiddly, but there still isn't anything that's close to its control capabilities, particularly with the built-in incident flash meter that correlates all the flash units.
And it's pretty sweet when you call for warranty service and the FedEx guy hands you the new unit as he picks up the old one.
I had been waiting for them to put out something with HSS, however, and directly battery powered. I fully understood that Paul Buff's philosophy was that he made studio flash units. Vagabond was in his eyes just a necessary evil that made them "transportable" but not really "portable." But I had hopes. Then Paul died and it seemed he was the only innovation engine in the company that could have made a significant advance to a truly portable flash system. They've been promising the new Link flash system, but it's not really there yet and it's not really here yet.
In a bit of exasperation, I bought a couple of Godox AD600 units, an AD600Pro, and a couple of AD200 units a bit over a year ago.
As I recently built a residential studio (that I should be able to totter around in for the next few years into my dotage) and re-thought my own photographic direction, I gave a lot of long, hard thought to whether I should go all-Godox and sell all my Buff stuff. That was when the second battery for my AD600 Pro died as suddenly as the first one. Made me think about it more.
My final decision was to go with both systems. My Buff stuff will be in-studio only. I won't even try any longer to make it act like portable gear. I'll sell the AD600Pro. I'll keep the AD600 and AD200 units in location kits for the few times I'll go to a client's home or office (no more street or park shooting for me).

