The 76 comes with HD. It's optional on 61. There is a slot for permanently inserting an SD drive as well as one for USB stick.
If I ever approach filling up the USER (Solid state) Drive, I will consider the HD option. I don't see that happening because I don't load too many samples.
Don,
How big is the USER, solid state, drive? Can you see what's loaded on it?
The S970 has that 512 mb solid state drive but the problem is there is no way to view how much of the drive is used or, for that matter, where in all the storage of the S970, stuff is stored.
On our Tyros 4, it's like a computer, you can see how much is stored and what's left for storage.
My S970 seems very strange in this respect.