As is always noted when discussions of this sort come up, speech preference is
a personal thing. But I really dislike Dectalk. Its one of the phonemically
least accurate speech engines out there in my view, and it has
the disadvantage that there is only an English version. As much as I don't like
eloquence, one of the things in its favor is that there are many languages for
it, so that folks wishing to use a language other than English
would be able to do that, at least in theory, if Humanware went that way. My
personal favorite is Doubletalk, but it has only one other language and I
haven't a clue how good it sSpanish is.
Mary