Well, I've gone and done it - I bought a Genos this week! I had been waiting for a good time to upgrade, and after I saw that Yamaha was going to put out a Genos update, it seemed safe to me. I still have my Tyros 3 for now.
Some first impressions:
1. Maybe I'm imagining this, but the keybed feels a little different on the Genos. It's not bad, but on the T3, it seemed harder to do glisses than on the Genos. I did a measurement, and the keys on the Tyros 3 and Genos go down the same amount when pressed (around 1 mm.), so that's not why.
2. I love the touchscreen! It's so much easier to name files and switch between screens. The only problem (aside from smudgy fingers) is using the left-right drag on the on-screen dials (like in the EQ section) - it's difficult to dial in a precise setting. Using the data wheel or the on-screen number pad is best.
3. I prefer the joystick to the modulation/pitch bend wheels.
4. Adding expansion packs is easier than I thought it would be.
5. On the Genos, the jacks on the back are easier to see and access than on the Tyros.
6. The Genos' power switch is on the top panel rather than on the back like the T3.
7. The Genos' wi-fi is handy, and it actually works. I never did use the internet access on the T3 - back when I got it, I had dial-up! Plus it only worked with certain wireless adapters which were obsolete by the time I got faster internet.
As others here have noticed, the Genos sounds different out of the box than the Tyros - more flat. The T3 pianos especially seemed to have more reverb or something by default. I need to do some adjusting of the EQ and effects, and am going through old threads here to glean information.
Thanks for the information you provide here - it's a big help!