Which Cards is the Best One?

Hallo the community i thanks any of u for helping asterisk community to grow.
I just wanna have an information about which card is the better one when i would like to use a PSTN network to connect to my Asterisk PBX?
If there are some clones that are just doing that instead of buying a all in one card of Digium ?

Thanks for your retrieval responses

When connecting Asterisk with PSTN network It is important to remember the issue of echo.
Select a card with echo cancellation
or use the echo cancellation software
You can also use FXO gateways