Today I received the Tyros2 that I ordered from George Kaye.
Thanks for the great service (as usual) George!
I played it for about an hour and I think it is a terrific keyboard.
The super articulation voices are fantastic. They raise the quality and realism of sampled acoustic instruments to a new level. The Tyros2 also has many excellent styles (and a few cheesy ones also).

I also own a Roland G-70. Here is a quick comparison after one hour with the Tyros2.
Sounds
Piano - the piano on the G-70 is way better than the piano on the Tyros2. This is my only major disappointment with the sounds on the Tyros2. The tyros2 piano sounds thin and does not have the warmth and dynamics of the Roland piano. On the Roland I can turn off the arranger and play a piano solo. It feels and sounds like a real piano. The Tyros2 does not. With all the incredible other sounds on the Tyros2, I wished they upgraded the piano sound.

Organ - I like the Roland’s VK drawbar simulation better than the organs on the Tyros2. The Tyros2 has a super articulation organ which is very good, but I like the Roland VK sounds and real time control better.

Electric piano – they both have very good electric pianos.

Brass and Saxes– The Tyros2’s trumpets and brass sounds are way better than the Roland G-70. The super articulation brass sounds are by far the best brass voices I have heard on any keyboard. I also like the saxes on the Tyros2 better. The G-70 has a couple of good sax sounds but the super articulation saxes on the Tyros2 are incredible.

Guitar – The super articulation guitars on the Tyros2 sound fantastic. I think they sound better than the guitars on the G-70. However, the guitar mode on the G-70 is cool. On other keyboards (including the Tyros2) I sound like I am a keyboard player playing the guitar on the keyboard. With the guitar mode on the G-70, it sounds like a guitar player.

Other sounds – other than piano and drawbar organs, I generally like the Yamaha sounds better.

Styles
The G-70 has some very good styles but in many categories Roland needs more good styles. I feel this is a major weakness with the G-70. The Tyros2 has many very good styles. The jazz, swing and latin categories have many great styles to chose from.

Other
The G-70 has 76 keys, the best key action of any arranger keyboard and is built like a tank (it is very heavy to transport). Its user interface is very intuitive and easy to use.
The Tyros2 has 61 keys, a good key action, and an intuitive interface and is also easy to use. Its size and weight make it much easier to transport to gigs.

The G-70 has a lot of other functionality that is not on the Tyros2.
(Sequencer functionality, make-up tools, cover function, guitar mode, etc.)

Conclusion
In a studio, having both is a great combination. They compliment each other well. If I had to choose one keyboard I would go with the Tyros2. Other than the acoustic piano sound, the Tyros2 has the better sounds. The super articulation voices raises the realism of the voices to a new level. The Tyros2 also has a lot more usable styles. There are many other things I think the Roland is better at. However, sounds and styles are the most important. If Roland released a bunch of new styles (like Roland Scandinavia did with the midi-spot styles), I might change my opinion.

The above comments are just my impressions opinions. Your ear and taste may be different.

In the next few days, I will record a few songs on both keyboards and post them.