I purchased it, and yes, it's a great program. Totally thumbs up from me. If you write a lot in Russian it's definitely amazingly comfortable to use it. Of course it doesn't automatically correct your grammar--but it acts as a fast resource, reference guide with grammar tables and stuff; so it's essentially a huge time-saver. There are still a few bugs that make it crash, hopefully those will be fixed as the software grows older. That's the only big flaw I see. Still worth every penny IMO. Yes, I very much recommend it. Try the trial first though.