I owned my sd1 for about two weeks. I 've been running into some problems when I am working with the sampler and when I assign drum2 to out 3, half of the drums from the preset styles disapear on me. Also if you want to make your own styles you have very limited options, for example there is no copy measure, delete measure, event editing. This keyboard is still very weak when it comes to making custom styles, not very good for a high-end arranger keyboard. They have gaven you extra outs but you can't use the onboard effects for the outs 3 and 4. The other thing that I am not impressed with is mic outs. If you want to use your mic through the L&R outs there is effects, but if you change the master volume of the keyboard it will change the level of your mic. If you want to use the mic out 1 or 2 you can't use the effect processor of the keyboard. When I am working with wave files and loading it to drum2 and using copying function in the pattern edit mode or generally woring with the sampler the keyboard gets confused and malfunctions. When loading a wave file from a floppy the keyboard froze on me a few times by now. These are some of the things that I foung out about the sd1. I hope they will make some changes to correct these problems.