I just downloaded some noise test signals from
http://www.dogstar.dantimax.dk/testwavs/
seems like i'm getting half-decent recognition with these mics, with "brown noise" in the background. However, that doesn't exactly prove anything. I never actually did "voice training" with my old mic, and I notice recognition goes up a LOT with that having been done with these mics, so I will have to do the training in the car and see how that goes