The SX900 is a great keyboard for bashing out some quick fire styles "on drugs". It's attractive and addictive.

I still have my Tyros 4, and I will say the T4 is still the better keyboard I think - its going nowhere.

I knew the SX900 didn't have aftertouch but at the time I didn't think it would matter.. but seems it does certainly for some type of songs. But honestly... for the kind of technology it has, and so called top of the line mid range, it should have included it, its a huge oversight I think.