Thanks guys. The numbers are what I needed to see (2500 - 4000 fpm ish ?). The times I've seen colleagues achieving initially 5000 - 6000 fpm, at the expense of ALL airspeed, seeming to think this is what is required. ie absolute max the A/C can achieve by flying VERY slow. I never have thought that is necessary. 2500 - 3500 fpm is normally quite achievable, reasonably comfortably, certainly at lower to medium levels.
Ta.