I've used recultured DuPont and it's AMAZING strain - from what I can infer DuPont use a major mixed strain (4 - 6 strains) in house. However WhiteLabs became the dept of improvements and picked the 'dominant strain' for WLP565 which seems to crap out after a while. I can't help but think this is why DuPont maintain a mixed house strain - to stop that.coatesg wrote: Wyeast 3711 is apparently much easier to handle than the Dupont strain - I've used 3711, and it went to dryness (1.002!) without any silly temperatures or long fermentation times.
4 beers made from DuPont recultures have dealt well with high temps and done fine at lower, fermented out fully to 1.002 and generally an incredble characerful yeast.
Have used the Fantome strain (Wyeast 3725) too but that hit the buffers and stopped around 1.014 so used champagne yeast to finish up - fantastic phenols but seems as picky as wlp565. Wonder if Fantome wild strains take up the slack later...?
I have a magnum of "Saison DuPont Cuvee dry hopping 2011" bought from brewery

My top Belgian yeasts so far are def DuPont reculture and the Bastogne (Orval) yeast - loved the La Rulles yeast and recultured a lot from a bottle of Estival so that's next one to use.