My favorite low power driver remains the SimpleDrive by X-Wossee/Vladimir. I can't recall what his handle was here in PL. BBE maybe? Anyway, the SimpleDrive came in several power versions that you'd match to your diode's needs. This specificity allowed better fine tuning of bias/zero-balance settings. The SimpleDrive had stand-by beam suppression, bias, optional high-temp monitoring of the diode, and optional interlock. I routinely get my singlemode diodes (in the 30-700mw range) to lase reliably to as little as 1mw.
There is one huge snafoo at the moment though; Vladimir is located in Russia. At this time I doubt he can ship anything out to most countries.
-David
"Help, help, I'm being repressed!"