Newest receiver with support for low symbol rates?

[satman2019]

Which GTMedia receiver is the newest receiver which supports low symbol rates (300 and below)? Also 4:2:2 native support would be desirable but not necessary.

I currently have a V9 Prime and it locks SR of 300, but it is several years old.

I also have a V7 S5X, but it does not lock low symbol rates, not even SR 1000.

Thanks!