I upgraded from Perfect Space to Pristine Space a long time ago, but sometimes Perfect Space was, well... perfect. Quicker to set up, lighter on the CPU, what's not to like. These two were my goto convolution reverb.
This past winter I picked up Reverberate 2, and overall I do like it better. I am still learning, so I still use the Voxengo plugs when I am in a hurry. But I really like Reverberate 2, and I suggest, to any that ask, that they download the demo and take it for a spin...