This is my second pair.
For quality and comfort definitely a 5 rating.
Size accuracy let's them down. I am I size 6.5-7. Purchased a 6. They fit my partner who is a size 8. Ordered size 5! Perfect Fit? Luckily my partner needed slippers so did not need to faf with returns.
Advice order a good 1.5-2 sizes smaller.