That's really quite good. But as I've said elsewhere, what we desperately need for the particles system are features like sprites and geometry instancing. Either or both would help explosions (and a lot of other things) to not always look like it's entirely built of triangles...which it is. I've been spoiled by Maya and Dynamation, and I keep feeling like Carrara is soooo close to having a good setup... it just needs that extra third party push from a good programmer...