Finding it o.k, done a few in this product now. No taki. It`s seriously heavy. I think it was 170sq, which was nearly 1.8 ton. No underlay, floor is nice and flat. Its going down on top of existing acoustic vinyl, which is about 6mm thick. It`s above a car park, so no serious sound issues below. 5mm expansion, which will have to be beaded.
Lets hope for their sake they aint having a free weights section on that else it'll certainly be 'clicking' after the roid heads start bouncing them off the floor looks nice though, still havnt used this product yet!