As the person who started that thread I've ended up very happy with Hey. There was an initial period of disappointment with the input lag related to Xbox cloud streaming, but their support was responsive and it has now been fixed via direct peering with Microsoft. Whether that was as a direct result of my query or just coincidental timing is unknown, but I was impressed with their support rep who took the concern seriously and kept me in the loop as to their progress throughout.

Other than that I've had no issues with them and have just cancelled my existing Swish contract today. Happy to recommend.