the reason only dewalt radio's charge batterys is because they hold a patent from what ive read on the internet?.
both are good radios tbh, the dewalt will be louder, charge the batteries. the makita is easier to live with due to its size and the time the batts last but dont charge. The new bosch radios are supposed to be the best site grade ones, but i dont touch bosch apart from the 36v so cant comment. Milwaukee radios are very good also.
it makes no real difference to quality that dewalt is part of the same group of companies as black and decker apart from probably better R and D. Stanley make mostly good stuff for both the diy and professional markets.