Glen, I'm a little late in getting to the forum, but you can actually get many thousands of styles on an SD card. Just use the custom memory to store 20 styles at a time into one slot of the folder. Hence, 20x20x99=39,600 styles. Technicsplayer gave a good example of how many different files you could load into an SD card some time back. When you fill all 20 slots in custom memory and get ready to save to SD, be sure to enable custom save.