TurboPrint vs. 3.9 stock drivers?

[CRL]

Hi all-
I'm thinking of my next upgrade for a A4000.  I think it would be fun to work with photo touch-up software, but even with a decent printer (HP 850), the 3.9 drivers give somewhat rough, streaky pictures (way better than the old printer/drivercombo, but no bragging rights).  Can someone who uses TurboPrint give me a speed/resolution comparison?  Does the Turbo affect Final Writer, Pagestream 2.3, Brilliance (which maybe have their own custom drivers)?  
Thanks for any advice-
CRL

[CRL]

Hi kgrach-
Thanks, sounds like the TurboPrint is what I want.  Question- does it get the speed by sending ascii to the printer fonts (like transcript does, and every old style wp)?  That really blazes for speed.  Another question, are the images you spoke of pictures (as in photographs of people or things)?  
Thanks again- can't wait to get this and install it.
CRL