Anyone else looking at this brand new release from Plugin Alliance? I have never had much satisfaction with adding even mild compression to my mix buss, at least on predominantly orchestral material. Out of curiosity I watched a video on SPL Iron yesterday and was quite impressed with the modeling and the technology, but still didn't think it was something my music could benefit much from, based upon my past attempts with mix buss compression. Nonetheless, I decided to install the demo today and tried throwing it onto a little test project I have (nothing special, just something that exercises the orchestra for a few bars), just to see if it could do anything worthwhile for that type of cue. Two minutes later I purchased the plugin. Yes, I was (and still am) that impressed. It's literally the first time I've dropped a compressor onto my mix buss and said "ooooh, THAT is why most everyone else seems to feel a bit of mix buss compression is worth doing." To my ears, SPL Iron is just incredibly smooth and transparent, and immediately makes the mix sound bigger and wider somehow, even when volume-matched, but without the usual telltale artifacts of compression. (Maybe this is just a characteristic of vari-mu compressors in general, a type which I have never tried before?) Looking forward to spending much more time with SPL Iron this weekend, but just from my limited testing with it today, I believe I've found my new mastering compressor.