I bought the full version of Breverb. The added functions aid the tweakability, and I do find it quick and easy to dial in something useable, which is mostly the way I use it (i.e. pick a preset and tweak to get it just right). I think this is it's strength.
I do, however, like ReMatrix a lot, and find convolution reverbs in general much more to my taste. My only frustration with ReMatrix is, if the Pro Channel is being used pre FX bin, ReMatrix can't be the last plug in in the chain. This means that if I want that function, I'm going to have to find the cash for the full version. I'm very short on cash at this point in time and will have to wait for some time before I can convince treasury that this is a worthwhile upgrade. (sigh).
I would much rather have the light version of Breverb and the full version of ReMatrix, but this, as they say, is the way the cookie crumbles.