In case you’re looking for a powerful stepper driver, take a look into this PDF: http://ftp.o2s.ch/RepRap/drivers_overview.pdf
It’s an overview of driver chips from ST.
I’ve chosen the L6208Q for my new RepRap-Electronics design.
It’s the strongest possible SMD part which still does PWM and stepping logic on it’s own.

If you wanna go SMD and you are looking for an alternative which is not as damn expensive as the L297 in SMD case, I’ll spare you the rest of the 20 awake nights.
It’s the A4989.
Under the following link you can buy one for around 4$ which is half of the price for an L297 in SMD:
http://www.digikey.ch/scripts/DKSearch/dksus.dll?Detail&itemSeq=116726484&uq=634771081247262960