[ger21]

The geckos will work great for any size motors up to 7a and 80V. they would only be overkill in the cost department. The Xylotex should deliver similar performance up to 2.5a and 24V, but the Geckos have the edge over the Xylotex because of the Xylotex's low voltage limit. They'll both give you the same low speed torque, but with a higher voltage power supply, the geckos will let you run at higher speeds. But, for motors under 150-200 oz-in, the performance increase from Geckos vs. Xylotex probably isn't worth the price. Save the Geckos (and the money) for bigger motors.

If you do get a Xylotex, you'll still be limited in top speed by the 6V rating. So if you want to go faster, you really should upgrade both your motors and drivers.... I just looked at your machine thread. If you're going to keep that machine for a while and want better performance for low cost, get a Xylotex and try to find some 180-200oz-in motors.