I currently fly the ME110G at 34,000 feet hunting bombers.
It's really not fast enough to make more than one slashing attack before having to creep up dead six at that altitude but the guns are powerful.
What really fun is coming down after the hunt and finding an enemy fighter who ignores the "up views" because he's at 28k feet and doesn't believe he will run into someone higher.
That's when I turn off the engines, dive in on his six, shoot him with whatever I ammo I have left, and then hit him with the rear gun as I streak past underneath......if he's not a ball of fire by then.
I'll eventually gravitate toward the plane that nobody wants to fly and find that one place in the flight envelope that it holds an advantage.