I use Pagestream 3.4 (you should get the upgrade, it's free to 3.2 or 3.3 owners) but I don't use turboprint. I use the Pagestream drivers, with excellent results. Why not try this method?
I have had no trouble changing between printers, that is Pagestream's fault. I have, however, had problems with Epson ink jets - specially the Stylus Photo 820! I have much better output with HP of Canon printers.
