There are two versions of P3, the best one is P3-A - right ?
They are the same table except for the tonearm which has some different specs to be more compatible with lighter more modern lower compliance carts as I was told once. I have had no issues with modern cart’s at all, so perhaps more to have a new model when the Technics SP10mk3 was released.
According to the vintageknob the signal-to-noise ratio went from 78dB on the P3 to 95dB on the P3A, so I suppose it is correct to assume it is (much) better.
as JP mentioned, that is incorrect. If you read the footnote, all that happened was a different way to measure signal to noise ratio. The P3 and P3a are the same table and both measure the same.
cheers