I've been on the lookout for reliable rigid finger tape for joint protection as well. During my search, I came across a website that seems to have a solid selection: https://whatistruth.life/shop/. They offer a variety of finger tapes with different materials and thickness options. One thing that stood out to me about this site is the emphasis on quality. Reviews from other customers suggest that the tapes are durable and provide good joint support. It might be beneficial to take a look at the reviews to gauge how well the tape has worked for others and if it aligns with your specific needs.