I tested Stiga Airoc M rubber a few weeks ago. I played only about 15 mins with it but here is how it felt:
The sponge felt quite soft. That was my first thought. Compared to Tenergy 05 (that I've been playing for several years with now) it was a big difference. The rubber had good spin and control but I put the speed both to "pros" and "cons". It felt like I had to hit really hard to get the same speed as with Tenergy 05 but to be honest it wasn't really that bad.
From what I've heard from my friend they have also really liked the rubber and said it's the best one Stiga has made so far. I think it fits quite well with poly ball. The rubber is certainly worth a try if you want to try something new and a bit different than Tenergys. I'm thinking of starting to play with this rubber.