I've now had my Tyros 2 for a week and it's blown me away. However I must disagree with Roel that using it for SMFs is a waste. For live use I use SMFs for the most part and the superb sound quality and the ease with which I can change the original SMF to sound like a live band is stunning. I managed to make most of the edits I wanted to, without looking at the manual, it's very intuitive. One of the HUGE advantages for me is the ability to display chord symbols in the notation screen. This gives me an endless repertoire and means I can play along with /over songs I have never played before immediately. I use PSRUTI to derive the chords (although sometimes it gets it very wrong)and XF tools to correct the mistakes. Both programmes are free on the net. I only play out live about 6 times a year and there is no way I could remember all the songs I need to playing so infrequently. (My singing partner knows the words to about 300 songs and the tunes of probably 1000's - being able to display words on a monitor for him is also very helpful for requests)
etc.) The very accessable 'channel on/off' button means I can turn off the piano part or any other part I want to play' on the fly very easily. I have used Roland Keyboards for the last 20 years and this is massively more intuitive. I looked, played and listened to the G70 and the Tyros is superior in every way to my mind except the 76 keys. I get around this by using a Korg O1W pro as a second (lower) keyboard. By setting this to Global Transmit on Midi Ch1 it mirrors the Tyros and I can mix in some of the (still) superb sounds of this classic Korg. The front USB socket on the Tyros 2 is excellent and obviates the need for a hard drive unless your into audio recording. My 0.5GB stick (£30) has over a 1000 SMFs on it and still has over 400MB left!) As an arranger I found my Roland VA76 virtually unusable in comparison to the Tyros 2 and will now start concentrating again on this aspect of my playing because of the incredible quality of the backings - it's just so much fun!