I had previously gotten the curve in a grab bag, super duper soft, nearly loved it, and this is the perfect improvement. Definitely pleased with my new go to in my slowly growing collection of Tantus toys.
The firmness strikes a great balance of feeling realistically squishy, while being able to thrust or grind it easily/reliably, and soft enough to do so with near reckless abandon without causing any discomfort. The ridges and curve work wonders for both my gf and myself (male).
As another review mentions, this is also fantastic for harness play, as it basically puts itself where it needs to be, and is soft enough that it does not press too hard.
One initial worry I had was how I'd end up liking the surface texture, which is more eggshell than glossy. But after trying it in play, it actually provides a nice amount of friction without feeling grabby.
A+ all around.