This is definitely the best VSTi that I have tried to date. I am very impressed as to how well NI has copied the DX7 architecture. Actually, it seems to me that they have modeled it more after the SY77/TG77 than the DX7. They have also added several new and innovative features while flawlessly retaining backward compatibility sound-wise. The addition of a filter operator really gives the FM7 a lot more flexibility at replicating more traditional analogs type synth sounds. The “Easy Edit” feature is great for quick "on the fly" tweaks.
IMO this will be the new yardstick that all VSTi’s will be judged by… Well, at least for a little while.