Interesting discussion, folks

Regarding G-6 vs -9U, and overshooting, I'd like to contribute my experiences.
I've flown the Yak-9U a lot in AH, and before that the La-5FN. The planes I really like to meet up with are, of course, German: Bf 109 and Fw 190. After many such encounters in the MA, I must say that a Yak-9U has about as good rudder movement as a messer, even at low speeds.
Many of us are familiar with the unique evasive employed by 109 drivers, those hard vertical, low-speed rudder turns that look like a cross between a barrel roll and a yoyo. In a La-5FN it is difficult to follow this maneuver, but just possible. However, in a Yak-9U one can actually anticipate this maneuver, and through a combination of throttle and maneuver place a Yak in a parallel heading with such a 109. This often results in an advantageous trailing position on said 109 after about 2-3 passes.
The Yak-9U in AH really enjoys being 'yanked' around into hard maneuver, whether they be rudder turns, snap rolls, or anything at low speed. The stall boundary is very defined, and while the gap in between is not as wide as some aircraft, the Yak-9U responses enthusiastically to even modest stick or pedal input. Combining this with an excellent initial turn rate, a very good roll rate, great e-retention, and high top speed, the Yak-9U is quite a handful for an adversary.