yr bc 700 is fine.
1, bc 700 charges batteries with pulse current. what the display shown is just average reading.
2, eneloop rated its batteries capacity in both minimum and typical. i believe it is written on the batteries and the package too.
the answer is really depends on point of view.
the xx is pricy, but do give u some more juicy.
if u really need the extra miles, u have to pay the money.