I had the predecessor, the Wavejet 354 (without Touch) and the screen layout really has not changed much at all. It seems this scope is the same as before, just with added touch.
The lagging of button response when the FFT was on was also present in my 354.
Interestingly, the one I had, came with a light and pleasant outside color.
But, the main reason why I do not have this scope anymore was the unbearable noise from the fan.
Since Dave did not mentioned this in his review -or I missed it - may be this is a true improvement to the older version.