Hope you enjoy your new keyboard !
You'll probably find that one of the main, even only reasons for people purchasing the SX700 and SX900 in preference to the SX600 is the touchscreen. It's just personal preference, but you've got yourself an amazing keyboard there anyway. These SX models are very advanced, and full of the latest technology. They are all very nice keyboards to own and play.
I've loaded all sorts of stuff onto various USB sticks, and so I can get all I want to get from my own SX700.
Enjoy playing it. That's the main thing. 
I for example prefer physical buttons to touchscreen
As I prefer regular cars over electric ones
What's more, I'm sure that most people that choose SX700/SX900 for home playing (which is most of us anyway) are not aware that SX700/SX900 models
LACK audio interface, which allows recording music over USB straight to laptop/computer software.
On SX700/SX900 you need external audio interface, or record onto USB stick and plug it into computer, import mp3, etc..
This is why I did research before buying keyboard. However I missed to check one thing - to check if in Controller assignment you can assign pedal to TRANSPOSE function. But I am in touch with Yamaha, if they can implement it in next SX600 firmware.
