No, we simply have no information to base a recomendation on, thats not calling him bad. But here is what I will, and have called him bad for before. Would you trust a vendor who calls himself A123, when he does not sell packs made from A123 batteries? Bear in mind that there is a vendor with a bad track record on ebay. He charges his name often, and at least half the seller names have combinations of letters and numbers or words and numbers. Knowing this particular vendor is out there, and knowing he sells under numerous names, we can only recomend those vendors we have heard are ok from a reputable member of the sphere. My personal list is Headway, Ping, Hightech bikes, Ebike kit , Cammycc, in no particular order. In general, each vendor offers a different type of cell, so the choice is made not so much on price as by what discharge rate or size you need. This is a long list of good vendors compared to last spring, when it was just ping.