I found the 85/685 OmniCitys quite unbearable. The worn down, dirty seats and the lack of wifi put me off to be honest. The rear step next to where the engine is, was actually wobbling, not vibrating, wobbling!
The ADL E300s on the 685 operated by Stagecoach, were decent enough to stay on for the whole journey, but the squealing was a tad unbearable.
Can't win these days
RE: Arriva North East: Latest News and Discussion - March 2016