Costco. I got Kirklands 4 years ago, with 90 day return warranty and 3 year warranty. They were rebuilt with no questions asked just under 3 years after I got them. There are really only a few manufacturers - my Kirklands came in a box with some Rexton markings, and it was manufactured by Siemens. IIRC, Phonak and Oticon are other manufacturers, and there's one more, whose name I've forgotten. Mine are RITEs - Receiver in the ear. I wouldn't ride with them, because I'm told moisture kills hearing aids, and sweat ruins into my ears. From the hearing aid forum, I conclude that HAs are like saddles - what works for one person may not work for another. BTW, ear wax is a big problem. According to my doc, ear wax is natural. If you keep cleaning your ears, the wax just comes back faster and thicker, or you get sick. Life has been easier since I started cleaning wax out of my HAs instead of my ears. Alas, the HAs didn't reduce my tinnitus; that's another person to person variation.