Bachus,
I owned both a Tyros 3, a Tyros 4 and now have a Tyros 5 on order. On none of these keyboards have I ever messed with sounds or cared if it was possible or not. No one in the US has one yet and only a few have been to the stores that do have them in stock and ALL of those people have posted nothing but praise for the keyboard. I don't know if I will like mine or not but one thing for sure, until I get my hands on one I won't be posting my opinion about it like so many others are doing. My thinking is if someone just has to edit sounds they should be looking at a true workstation - not an arranger. Yamaha did a survey about 2 years back about features of importance to arranger owners - guess that is why it has turned out the way it is.

Deane