Module 1.0 (3.141 pitch) from World of CNC (Yeah right!)
Driven through a 3:1 belt drive reduction.
Don't think I'd do anything different at all. The motor doesn't need to turn quickly to get a decent rapid which also means lots of torque left in the motor but the 3:1 reduction gives a good level of accuracy.
To be honest with you, I took the advice of David Steele at Solsylva. He's done the research and I just followed it.
Regards, Jeff