I didn't think I would notice a taste difference using this diffuser versus a metal one, but I certainly did. This was SO much smoother. I loved it. Little bits of tea can get stuck in the diffuser, but a toothbrush gets them out. The design of the glass/handle isn't the best, but it's worth it to get the glass diffuser. I also found this at a common brick and mortar store for 2/3 the price here. With their 20% off coupon it was a steal.