Xiaomi wifi 6 routers - Which one is best for the buck?

Please help recommend these wifi 6 xiaomi routers.

  1. Ax3600 $111
  2. Redmi Ax6 $78
  3. Redmi ax5 $55

Which one is best for the buck?

Every device you mentioned is best for its buck.
There aren't any comparable device for this low prices.

Which one to choose depends hardly on your requirements...

only at this moment, 512MB ram minimum for future and good wireless performance

thanks. bought ax3600.