Squeak, I can answer your question.
Yes, you can save your user tones in 128 user locations. You can also customize drum sets and store them in 16 user locations and you can save 32 user performances.
The GW-7 also has 32 MB of Wave memory. there are 576+256(GM2) tones. 37+9(GM2) drum sets. 101 Performances. The Roland Rep who showed me this keyboard also showed me how they have improved the operation of the 16 track sequencer over the EXR series. Now, you can start by selecting the "all" mode, record whatever you want. And when done, you enter the single mode and with the push of one button, you can select any one of the 16 tracks you wish to record new or overdub on. The keyboard weighs 11.1lbs.
There are two knobs on the keyboard which allow for Analog modification including filter, envelope, mixing volumes and controlling effects.


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George Kaye
Kaye's Music Scene
Reseda, California