Pany B are great cells, full stop ! For me though they are not the preferred choice for this light or many other modded one. Maybe good for 4.5a or so BUT thats max, the 10a at 5a ask is a breeze and not pushed. What you have to consider is the toll it has on a cell , running pretty much full on................it will shorten its life over the course of.
I kind of dont look too much on the cost(other than crazy premiums on certain branded ones when inside they are an X cell, pay for the wrap basically). So i dont put a cost on them to an extent, by that i mean, if i want a high drain cell from a good manufacturer(LG/Samsung etc etc) then thats what i get. imho the 10a 3500 would be the better choice for this light even though its not a crazy output light. If starting from scratch and have to buy some, it would be the Sanyo's over the pany B's. Better to run it asking 50% of the cell than 100% basically(general comment). If i had a matching 4 pany cells, then i would be fine to use those over buying more..............if makes sense.