I wasn't happy with the fit of my existing dash cam into my Tekna+. The electronics module in the centre of the windscreen comes down too far to be able to mount it underneath. The dash cam from my previous car, like so many, actually stands back from the windscreen quite a way so mounting it to the side means that the electronics module comes into view, unless it is mounted a reasonable distance away from it, making it too far into the passenger's field of view.
I looked for a dash cam with a lens close to the windscreen and found that the "70mai" seems to fit the bill. It can be mounted quite close to the centre electronics module without it coming into view. The video it takes looks ok, and it has voice control. The sticky mount attaches in a way that can be easily removed. However, the setup is a little strange, it could be a little confusing for non-techys. Just thought it should be one to consider if you have a QQ with a big centre electronics module