I'm running the Acoms myself, and I have sat on my desk here a perfect working order KO Espirt 2. I bought the Acoms as a 'trial steerwheel, trial 2.4gHz' thing, expecting to use the KO or Sanwa sets most of the time, but I love it and have totally converted.
If the steering seems wrong to you I'd suggest you look at your servo, not the radio for that.