I caught a 231 for the first time today.
I am well impressed with the new train. It's so much quicker in acceleration, than what it is replacing, the disabled accessibilty features are really well thought out and the whole experience is a massive step-up from what we have been used to. Getting a pram onto the train was a doddle, so easy and stress free.
There are some hidden features in the disabled area, that impressed us. All the stickers/notices have braille printed into them. There are two buttons on the doors by the disabled area, one for able bodied people and a lower one for disabled people. My wife and I found the fold down seats surprisingly comfy. The retractable step makes life so much simpler.
It was only after we were nearly at our last stop, that we noticed that prams are discouraged from being stowed in the disabled area, so for our return trip we moved to the pram and bike area. I was impressed with the amount of space set aside for bike users. Again the fold down seats are comfy - I tried out a normal seat and personally I found that very comfortable.