I'm sure some people have had very good experience with zenni, but for what it's worth I gave up after 4 pairs (over about 3 years) that never quite had the rig

I'm sure some people have had very good experience with zenni, but for what it's worth I gave up after 4 pairs (over about 3 years) that never quite had the right prescription. I had better luck with Warby Parker, but only have a single pair for comparison.