I use BHB all the time. Prolly so because I’m still trying to figure out how Akira connects after the 3rd hit on the lvl 3 RI.. BHB, to me, offers the most options. After you hit (usually after a 2D or 5k->5S, or 5HS) if they are hit: you can AC->FRC:
(Option 1): 66 -> 2D->CC->5k->5s->Dustloop.
(Option 2): 66->standard ground gatling->lvl2 RI->5k->Loop.
(Option 3): xx Super.
(Option 4): (In air, no AC FRC) straight into a D. loop or 5HS before.
(Option 5): 66-> Throw (In corner you know what to do to face)
(Option 6): (No AC FRC) 66-> lvl 1 Gun blaze (Have to hold down dust)
(Option 8): Fafnir->5k-> Loop
On block:
I uasuly run in and throw, you have plenty of time if you don't AC FRC. Works every time.
This is what I have noticed and done consistently when I actually have lvl 3. The only thing is, you have to be close, if the 3rd explosion will wiff, just stand back and charge. All info is character dependant.
I actually pulled off Option 1 off on a Jam just by randomly throwing the BHB out there and took 70% of her life in a full D.loop (All 10 hits or what ever). The cool thing is, some times when you CC that 2D from Option 1, you might get a lvl 3 charge. The final hit, BPR, will be lvl 3, so you go into a nother Dloop, but this is kinda risky cause you gota time the CC perfictly. I only did it once on accident...