Re: milwaukee ph test??
I started with the Milwaukee pH600 model (yellow with black cap) It was accurate, but SLOW to settle on a reading. Plus, the display was small and harder for me to read. I purchased a Bluelab pen and am much happier with it. Much faster readings, larger display, 2 calibration settings, etc.
I only use the Milwaukee for a backup, confirmation of weird readings, and such. I can't comment on the higher end Milwaukee pens, but for the price you posted, I am guessing it is the pH600.