Speedmaster valve quality

Guess it depends on your goals. Being you posted in the “race” section I’ll assume performance ranks up there pretty high. That said I’d be leaning towards a set of the “Bloomer” heads. Appear to have a port design that works and come equipped with what I’d assume would be quality parts coming out of a small niche shop and all. I know John (Pittsburghracer) liked the Speedmaster stuff but IIRC he was buying the bare castings.