I don't think it will matter much, because whatever we recommend (no matter how great it is) will be nixxed by the GF soon to be fiance. Your life will soon be filled with "compromises" and what I mean by "compromises" is whatever your GF decides is best for you.
So enjoy them Bose speakers, doilies on the tables and remembering what it last felt like to have a pair without asking permission to look at them stored in the glass case hidden in the back of the closet.
Seriously if you have Polks already, stick with that brand for timbre matching.