I recommend ordering from Amazon for sure for ease of returns. Most options are junk. I ordered APDTY based on some favorable reviews. What showed up was crown. After talking with APDTY, turns out crown is their supplier. They ended up fitting great, even though the set of crowns I ordered before had to be returned because they didn't come close to fitting.
You might have to try a couple different options, or the same brand more than once to find a set of seals that fit well.