> > Let's see, an expansion module versus a 3-way toggle switch... yeah, > that's a real toss-up.
Well, the expansion does a LOT more than adding a Saw mode :)
It adds more CV inputs for varying stuff, variable FM indexing for the Sine (a "poor man's DX-7") and other goodies. There are like 12 channels of ADC and 4 of DAC + audio stereo channels (1 IC hanging of the SPI bus). Might as well use them all up.