I'm ridiculously excited for OS4. I've stopped using my virus as much as I'd like to lately because I'm able to get certain sounds a lot faster using NI Massive and a few other vst plugs, .
the exact reverse is true for me. i find the quality of the Ti many light years ahead, and can find sounds much quicker than with massive... massive takes too long to find a usable sound, especially for the type of music i am making - industrial metal. virus to massive is like a lamborghini compared to a honda... in my opinion, and i think this is still true for all genres because the virus pads just sound whey better and warmer.