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Good vacuum pump for hobby?

As some already know refrigeration is a hobby of mine so I don't do it much. I'm in need of a good vacuum pump for occasional use and am curious if anyone could recommend one? I looked at a few made by CPS but don't know where they rank in the scheme of things.

Also is a digital vacrometer really needed or is the one on most manifold sets good enough? I have a set of Yellowjacket II brute gauges as well as a CPS R134A set.

My main projects will be refrigerators which have refrigerants that are very sensitive to moisture so a good vacuum is important. I have all the time in the world when doing this so speed isn't an issue but I want a good strong vacuum.

Thank you for your time and as always all comments are welcome.
Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment

Steam system pictures
Central air project pictures


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