well, are u in the us? if you are then there are some supply stores in the US, like battery junction http://www.batteryjunction.com/licyba181417.html
they have slightly higher prices than dx, but they ship faster. most ppl, even US ppl, go with dx.
Over at Candle Power Forums, the overwhelming consensus is that the Lithium Ion rechargable cells made by AW are the highest quality in terms of performance and reliability, as well as cycle count. Naturally they're also quite expensive. AW makes cells in most all common sizes (including 14500), and they are sold in the US directly from AW via CPF, or from http://www.lighthound.com/.
I personally have ordered batteries from lighthound.com twice now, and their service and speed is excellent. They have free USPS priority mail shipping for orders over $75, and since I live in Texas where they are located I get the order the next day. I highly recommend them!