Well. each style has 4 one touch settings which are a combo of 3 right hand sounds and 1 left hand sound. Also memory for vocal effects and what have you.

But let's say I'm playing a waltz or polka and I want a sound that is not in one of my one touch settings of 4. I then need to hit perfomance or solo sounds then select the sound I want, there are 2 steps involved that can and will take up some valuable time.

I think the Ketron was the best at this since it would remember the last sound you used and always pick that one when you went to the instrument bank