I think maybe our difference of opinion could also be because not all of us use the same sounds. For example, I did find the trumpets and choir voices on G70 to be good but I rarely use those sounds.. The sounds I use most are tenor sax,alto sax, soprano sax,flutes,accordions,guitars and for these sounds I felt the Tyros was far superior.
I have never before heard of an operating system upgrade to improve the sounds. This is a first for me. I thought they were always to correct functions.... Roland could have fixed this before releasing it because as it is it already has too many updates.....to me thats not good responsibility from a top company like Roland. My VA-5 if I recall had only one update in its lifetime..

I also find the Intro, Fill Ins, and Endings buttons on the Tyros more logical that on the G70.