After seeing this thread and reading everything I could find about the Streaklight/Godox 360, I sold my two Alienbees B400 units and my Vagabond II so that I could purchase three of the Streaklights. They came in yesterday and I have charged all 3 packs over the last two days. I won't get to run them through their paces for a couple of days but I'm looking forward to seeing how well they work. Fortunately, I picked up two of the Lowepro Nova Sport 35L bags on sale at Adorama before so they'll work great for these flash units.
I hope to get a lot of use out of these. I really didn't use the Vagabond II and strobes much because it wasn't that convenient. These will be a lot more convenient and more powerful than the B400s.