I got Q4 a month ago, it is labelled without "pro", but I believe it is the same thing... Got it new for around 500e in bass swap, for cash it should be somewhat cheaper, specially because newer model Legend 4 is around 500e.
I like it a lot, body is basswood so less sustain, but it also means it is lighter for your back. Ergonomics is very good, nice neck, but there is just a little bit of neck dive.
Sound is very versatile, lower frequencies are clear. General sound is very good, a bit more in treble - but that's easy fix with your preamp. Great usability for all kinds of music, a good universal bass guitar.