I have not tried the LinnStrument with 200 keys, but the 128 is good enough and with a much more affordable price. The LinnStrument can truly provide full expressivity with pressure and X/Y sensors, and is easier to learn (for absolute beginners) than a keyboard layout or a guitar. The LinnStrument has become my main instrument. If you do the math, the 200-key LinnStrument only gives you 9 more notes than the 128-key LinnStrument, so I don't feel like I'm missing out something. Roger Linn treats you well, he's open to direct communication over email, and you get the feeling also with his hand written signature on the instrument, the custom-made bag, and the free content you get with BitWig 8-track, and the open source firmware. The only small disappointment I have with the LinnStrument is that the keys have virtually no "travel", so it often feels like pressing on a hard surface. And it's also a bit disappointing that very low-velocity keys are not detected, so it's less sensitive than (for instance) a touchscreen. That doesn't remove the glory of the instrument, though, it's just room for improvement. I am very satisfied with this purchase.