No, it's the underfloor engines, uncomfortable seats, general impression of cheap build quality, lack of 'intercity' type ambience, and hopeless bicycle storage space that I've been unimpressed with on the GWR ones. I know this is all mostly subjective, there's no point trying to argue with those who like them, but my personal feeling is that they are an underwhelming replacement for the HST which is why, like I say, I'll probably start opting for a change in Edinburgh onto a Scotrail train when I make the trip between London and Inverness. For most of my life so far I've nearly always gone for the Chieftain even if the times aren't perfect simply because it's meant that the 8 or 9 hours is spent on a decent train. I don't expect everyone to feel the same of course.