Are you a all day hv person? If so then you would probably need at least 5 sets for a full day, that being said it is really nice having all thatt power is such a small package.
+ millions. When I get a serious craving, these little things are going to be lifesavers.
Can't wait till payday to try these babies out for myself. 

I've yet to find them at a price like Goodprophets has the Joye 306LR's for $4.99 as of my last check...