I liked the Peglers Terrier TRVs as they are neat & have colours for different temperature setting, but had the odd one fail in a year or two - they wouldn't shut off. They got expensive too. The Peglers Bulldogs I like, but I think they use the same body!
Danfoss TRVs are perhaps very good, but odd bodies with few threads for nuts & the pipe doesn't go in same depth are most valves.
Mistral TRVs can come with a lock shield valve in a box & are very cheap. Seem to be reasonable.