Woodford series 19 and 25

I'm going to be replacing a frostproof sillcock, and I was wondering what track record these two Woodford models have. I like the idea of there being drainage even if the hose is left attached (model 25). The internal freeze relief of the model 19 is new to me, and I wonder if it can 'reset' itself after the internal relief opens.

They seem to get good recommendations from plumbers. Personally, I've not used one.