kef r300 vs b&w cm5, cm6 or any other recommendations

looking for a pair of bookshelf speaker for classical music. now have couple choice in my mind.
kef r300
b&w cm5/6

originally, i am thinking of used b&w nautilus 805, but it is hard to get a pair with good condition around my area. 

how do you think of kef r300. now i am more interested in kef than b&w. thank you very much. 

have a wonderful holiday.
I know nothing about those B&W models but do know the R-300 is quite good at classical .