I am finding that Archer A6 and Archer C6 are available at the same price. I don't see any difference in specicoTions . Which one should I buy? i need good range and high speed beyond 250Mbps.

What are the differences, between the A9 and the C9? I have the C9 and was wondering what the A9 is. TP-Link AC1900 (Archer A9) https://www.amazon.com/gp/product/B07NF3K74H/ TP-Link AC1900 (Archer C9)