What if the Level 20 edition is that shoot twin stream in a helix formation. Each stream is either 50% or 60% damage output and the chain is halved from its single stream. Its appearances that think is either two options: One. Its moves in a spinning position, Two. It doesn’t spin, but it act like how the single positron stream goes.
It’s because they have the best balance between speed, hitbox size and extra firepower, if you’re looking for the best balance out of the bombers as of V50, I recommend getting the BX-7 as it’s got a front facing satellite slot which when equipped with a barbequer, makes for a great shield. The BX-8 is less viable IMO because it doesn’t have that front facing satellite slot and it’s slower and it’s got a bigger hitbox. Thankfully though, the BX-8 gets just as powerful with its primary weapons as the BX-9 once you get to 28.