I have a 25.3. My opinion of 25.5:
I like the bathroom size especially the shower which is why I got the 25.3.
and that it has good leg room even with the slide in.
The counter space in the galley is small or atleast smaller than mine (but they all are) and the beds don't look comfortable. Going to need gel pad and have to store them at my age my wife and I would need them.
Most get the 24.1 its the most popular. Difference I see between the 24.1 and 25.5 is the beds are better on 24 and the bathroom is nicer on 25.
I thinks that's two cents worth