You can shop for quality hearing aid products at Listening Lab.
I took my mum to Listening Lab at Simei to get her hearing aid fixed, during our first visit, she patiently explained the whole procedure to my mum and also explain to my mum why she really in need to fix the hearing aid. She is very knowledgeable, and friendly, and we are encouraged to ask questions. she is also very patient with old people which is the most importance. Also her after service is superb so I highly recommend.