Linux / which synthesiser card for speakup

[lists.speakup at duinheks.xs4all.nl]

Hallo,

It looks like I may have to install speakup on my computer in the moderately
near future.
The documentation with SlackWare 9.1, my current system, mentions a handful 
of
supported synthesiser cards.
What I would like to know is which one is considered best.
Once I know that I can probably think of some more questions :)

Groetjes,

           Hans.

--- GoldED+/LNX 1.1.5cvs031202
 * Origin: The Wizard is using MBSE/Linux (2:280/1018)