Accepting that you want a .25 rather than any other calibre, the normal choice is the HW80 because it is 'FAC capable' if so desired. You should certainly pick a break barrel HW because if you did get tired of it you just have to sell the barrel (to me not to that Shed tuner chappie ) rather than the whole rifle. Nevertheless I was interested to read about a 77/97 .25 because I have never even seen one.
Good luck anyway.