My first set of digital manifold. I don't own a digi cool or testo but sure they are fine guages. GO DIGITAL! Get the set that best meet your needs. I use my fluke 52 for the wet and dry bulb temps as I don't have to calibrate as often. My temperature clamps are designated as well.
Options are nice to have whether its an sman3,digi cool or testo know your tool and take good care of them!