I've had my G70 for a couple of months now, and it is different than other keyboards.

I noticed that the PA1xpro sounds more effect free and in your face, but I needed to adjust allot of the effects to smooth out the sound to be more pleasing in more situations.

The Tyros was better with its effect levels but I feel that it has a weaker overall sound, ex. the bottom end is not deep and fat but more boomy and hollow when compared to the Korg or Roland.

Then again the high end range of the Tyros I think is better than the Roland.

Tyors has more styles that cover more types of music.

Roland has a best User program system.
10x better vocalist and mic input with real time controlls.

I remember when I got the Pa1xpro, there where countless hate postings about the way the unit sounded and cost, blah blah blah

The Roland needs inproving which I think can be done with updates in software, so can the Korg, but the Tyros I think needs some hardware changes