Text to speech engines for Windows

[Bob Earp]

What's the best English text to speech engine for Windows?  I see there are 
ones from Microsoft, WinSpeech, Lernout & Hauspie, AT&T, and maybe others.

Are there others for Spanish, Portuguese and French ?

Also, through searching I see references to SAPI 4.0, SAPI 5.0 and SAPI 5.1 
(I assume) standards for these engines.  Are there any problems associated 
with a particular version and a release of Windows ?

Tnx, Bob...

Bob Earp - White Rock, BC

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