PolyTune 3 Tuner/Buffer : Features are not all useful

The PolyTune 3 offers nice features, but they do not all work. The normal guitar tuning in "needle" mode works fine, but the "Poly" mode is not useful. I tune each string in Needle mode, then the Poly mode will display at least one or two strings in red, indicating they are out of tune. So the dream to quickly strum all strings and then tune the ones out of tune in Poly mode does not come true. Often, the automatic single/poly mode switches to poly when I tune only one string. I tested the Strobe mode and did not find it appealing, as the strobe indication in which direction I have to tune seems fuzzy to me.

Besides all this, the PolyTune 3 is very solid, has a good display, has the power supply for another pedal. The question is if the features I really use could be bought cheaper in a different product.