I have not tried the Sanyo's, but I have compared a few store brands and the Turnigy LSD's are far far superior. Lately I have only been running 1-2 times a week for a few hours a trip. Recently I did not charge my transmitter batteries for almost a month and they were still holding almost 10V with this amount of use. Been using them for about 4 months now and I see no noticeable loss in capacity and no increase in self-discharge. The 2000mah Radio Shack NiMh cells are decent, sometimes you can catch them on sale pretty cheap. The Energizer and Duracell NiMh I have used were more expensive, and they worked well for a few months, but after that they would self-discharge to un-usable levels almost overnight. With shipping the Turnigy's can be a bit expensive, but if you order them with other items you will be getting a good deal.