we have the same discution with my wife...
the storage will be the finaly point for us
the refregerator is very small in the 19 and no storage outside like a 25 RB ..
like some other member say ... never get smaller always get bigger and its more money now but will be more money if you decide to change after few trips
I fall in love with my 25 and for us it a pefect fit...
you need to go to a AS cruise to see all unit and owners to show you all model and benefit