I've been using Headley titanium blades for a few years, and suggest them to all my quilting friends. They work great and last a long time. When they stop cutting perfectly - usually bc I've nicked them on something - I don't feel bad about changing the blade out bc at just over $1/blade, they are so much more reasonably priced than the more commonly known brand. Here is the link to the ones I order.
https://www.amazon.com/dp/B08C7PPTC3...n_title_1&th=1