M36 has become my go-to sub for S-04 - usually use it for English styles. But for others, APA's etc I like Notty - which seems like it's pretty much identical to CN36 - short lag, vigorous ferment and very-high flocculation. Also the same temp range 10 - 25ºC. Working at low temps makes it very handy for bottle carbonation in colder temps. I actually just brewed a (pseudo) lager using Notty @ 12ºC. I see Angel, the manufacturer of CN36 is a Chinese company... you don't suppose they 'borrowed' the strain do you?