You can play styles direct from the connected storage device. I am using a 512MB compact flash card which has 2,000 styles on it plus 2500 midifiles and they all play as soon as I call one up and hit start. I can also use other forms of memory storage which can be plugged into a pcmcia adapter which plugs into the back of the E50. There is also internal memory but it is limited to maybe 2 MB. I'm not sure about this one. I've got about 15 songs and 25 styles loaded in and I've got about 400KB left to use. Using an external drive plugged into the back is the way to go.
Roland confirmed the 1GB in the G70/E80 vs the 512MB in the E60/70 models of ROM samples.
George Kaye
Kaye's Music Scene
Reseda, California