I'm on the N1MM train. Been using it for several years. Steep learning curve but excellent performance, flexibility and outstanding support. Unless you have a pretty fast computer, and even if you do, I highly recommend an external USB keyer to actually send CW - if that is your mode. In SSB, you can record voice files so you can make it through the weekend without loosing your voice, but I've never been in an SSB contest in the "computer era". Can't remember the last SSB contest come to think about it, maybe early 70's??
tnx
Mike