In terms of true wireless sound quality, Sennheiser is running the game. Other companies  may have them beat for comfort or noise cancellation, but the MOMENTUM 3 and MOMENTUM in-ears are still the best-sounding true wireless we’ve encountered.

The PXC 550 is another true-wireless, active noise cancelling option from Sennheiser that has recently received an upgrade. Though overshadowed somewhat by the success of the Momentum series, the PXC 550-II is a great option for those who need more travel-friendly features without sacrificing sound quality.
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https://majorhifi.com/sennheiser-pxc-550-ii-vs-pxc-550-comparison-review/