Great idea for finally finding a descent printing temperature for my filament.
Printed it out on my Rostock Mini Pro at a 0.3mm layer height, adjusting my temperature from 210 to 190 in 5 degree increments and then 190 to 180 in 2 degree increments.
In the future I think I will switch to the 0.2mm layer height used by RepRapNeo. Also, I think 3 degree increments might be better. Did not see a good breaking point between the 2 degree changes in temperature.
Make sure to save your gcode for future use.