I've seen a band that use the Yamaha DD55 very very effectively, a latin trio-guitar, female vocalist and drummer (looked like he was using the DD55 Exclusively). I thought they sounded very good and the drummer had really made his DD55 work for him. Got me thinking that these portable DD's have a lot of potential. I'm considering the DD65 but feel the pads could be bigger, as they stand at present a lot of precision is required to ensure you hit the play area. Yamaha would do well to drop the internal speakers and just make the pads bigger.