The best I’ve ever seen is the matting at the Christchurch School of Gymnastics in New Zealand.
I was there for installation, custom fit carpeted mats held tightly together with wide Velcro. It was done by a local mat maker who took pride in producing equipment at a far lower price than the major companies, but of superior quality.
Even so, this was an expensive project. But worth the cost, we felt.
A lot of minor, dumb injuries occur due to irregular beam mats.
The only downside to this set-up is that there is no way to change the position of the beams. They are locked in.