What TV model numbers are you considering here? It’s perhaps not just about the HDMI-ARC/eARC port. You may need to consider the audio codecs supported by the TV to provide you with the best quality audio. It’s also helpful to know if the TV supports audio "pass-through" and whether you need it to support uncompressed codecs like Dolby Digital TrueHD, or LPCM Multichannel - Dolby MAT.

A link to each TV online user-manual might be helpful too.

I want the SONY XR A90K BRAVIA OLED 48inch :)

Ah you will be fine with that TV - here’s the summary codec information and audio pass-through supported by that TV:

• ARC/eARC Port  eARC
• eARC: Dolby Atmos Over Dolby Digital Plus  Yes
• eARC: Dolby Digital Plus 7.1  Yes
• eARC: LPCM 7.1 Over Dolby MAT  Yes
• eARC: Dolby TrueHD 7.1  Yes
• eARC: DTS:X Over DTS-HD MA  Yes (but not supported by Sonos)
• eARC: DTS-HD Master Audio 7.1  Yes (but not supported by Sonos)
• eARC: LPCM Channels (Bitstream)  7.1 Yes
• ARC: Dolby Digital 5.1  Yes
• ARC: DTS 5.1  Yes
• Optical: Dolby Digital 5.1  (but likely irrelevant here)
• Optical: DTS 5.1  Yes (but likely irrelevant here)

Thank u Ken!! :)