I recently sat through a lengthily Tyros 2 demo and Roland G80.

The G80 seemed to have many nice features – but it was not, in my opinion a good comparison for two reasons. Tyros 2 used the Tyros speakers, two small satellites and a small sub. Roland used a heavy-duty 15” speaker with tweeters. Second and most important The G80 is a newer keyboard, Tyros 2 has been out for a while. It would be fair to see what the Tyros 3 is equipped with. (Features)

Now that will get you nowhere because ----- You have not stated your needs and desires. Any one of the top keyboards can do a great job. And they will all come with a strong challenging learning curve.

Good luck, good choice, John C.