I own multiple sets of interchangeable needles, but the only ones I use are Chiagoo. I started with bamboo, but the tips wore out and hurt my fingers and had to be replaced. Lykke was next; better than bamboo, but the tips still wore out. When I saw Chiagoo, I knew they were the solution. The metal tips have an excellent finish which is comfortable to work with and doesn't wear out, so there's no need to replace them. Yes, they cost more than other options, but these Chiagoo needles are the last ones I will have to buy--except for extra sets because I prefer leaving the needles in an unfinished project rather than removing them.