IvanB, I think you miss Jack's point.

What you say is correct but that's not the point that was being made. The point is; because recorders are not treated as transposing instruments you can look at the dots for those tunes and easily decide that they are better played on the alto than the tenor (or soprano) recorder because they sit more comfortably in the range of the alto. If the F recorder were treated as a transposing instrument, most people would need to transpose the written music before they could make that judgement. My experience of seeing clarinettists struggling with written music for traditional dance tunes and having to "transpose" on the fly because you don't normally get Bb parts for such tunes so they have to cope with the music at pitch tends to bear that out.

leeneia, I have seen the argument in your most recent post used in another context and I am always suspicious of it.