Neither is objectively better — they connect to the same content differently. Use whichever your app and account support.

Sometimes a separate EPG URL is needed; Xtream Codes login usually includes it automatically.

They’re different formats for the same underlying account; ask support which format your subscription uses.

Both should be treated as private login credentials, regardless of format.

Quick answers

Do all IPTV players support both formats?
Most dedicated players support both; some simpler media players only support M3U.

Conclusion

The two formats exist for compatibility reasons, not quality — pick whichever your specific player app expects.

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