ive not heard of the B98, B96 arnt all that common , but they do have the advantage of running of sparklets i think the drulov is the most common.
but your C55 is defintly the better pistol .
i had a look at the walther C5 but aperently the electronic triggers have a habbit of dieing and thers no cure.
i shot an LP5 at my club last week beutiful pistols but i can understand why you wouldnt want it for your colletion.
cheers.