It's better.Is the neck as good as everyone says
You find threads on TB where folk wax lyrical about how thin and fast the neck on Fender Geddy Lees are, those Fender necks copied the Peavey Palaedium . I own a Palaedium and the Tune TWBZ neck is thinner
how does the combination of the piezo and standard pickups work, would you say it resembles any other bass sound
The mini switch is series/parallel. Personally I never bother with parallel. I've heard the " another tone option to your arsenal" claim , in my experience you could flick that switch all night and nobody will notice; not even the sound guy
The Piezo preamp section is great. You can adjust each string's output, the overall output and there's a high cut ; this is before you hit the EQ. I find it thickens up your sound no end when nixed with the magnetic pickups.
Only other bass I've owned with magnetic and piezo pickups is the Peavey B-Quad. Tune TWBZ does not sound like the Quad nor does it sound like a Cirrus ; owned 6 of those.
The Tunes are original designs, treat them on their own merit.