haven't worn them on court yet, waiting for my yonex shb01 to be ruined first. but trying them around the house, first impressions are pretty positive. they are pretty light and well cushioned, toe area seems to be roomier and bit wider than my yonex so that will be good for people who need wider fitting shoes. support/ cushioning around the ankle is quite thick but feels comfortable. the size of the shoe seems to be a bit chunkier than the shb 01 though....
Recently, I have gotten my close friend's help to get A820 when he was on his overseas trip.
My first impression for A820 would be that it is very luminous yellow pair of shoe where everyone around me will notice it's presence. It would score a 9/10 for beauty (Bumblebee)
After which, I proceed to wear it for a 2 hr game. As compared to usual Mizuno wave lighting RX3, I felt that the toes area is equally roomy. However, it feels pretty tight at region along the rear of feet (somewhere along the side smallest toe). After a few games, my feet felt a little tired. This is something that I did not experience when I was wearing Mizuno RX3. Probably, it might take a few more game play to break into this pair of shoes.