Three hours ago I just visited the largest Panasonic distributor in Southern China to talk about the PF model. It is quite good and is spec'd at 10A draw, typical 2900mAh capacity with a minimum of 2750mAh. They are only made in Japan, however models like B are made in China. So chances are the PF will have a considerably longer life.
They are pushed mainly for e-bikes in the US and power-tools in Europe, and come straight from the factory with a "button-top / washer" pos terminal which makes them easy to put in a series.
So I will also recommend to consider taking a serious look at the PF cell. The B range is mostly reserved for TESLA, which is driving the price up. (Their contract starts in April which will swallow up the supply entirely.)
Interesting, thanks.