We touched off a discussion regarding weather engines in a different thread, and since there is a strong difference of opinon and so as not to sidetrack the other thread, I've moved the conversation here.   @AirbusCG had a different opinion than I do regarding what the best weather engine is, so I now invite him to explain why that is.  I'm always eager to learn, so I invite him to explain his position and I look forward to an enlightening discussion!