Yes, I had a sweetone in D and I decided to get this one in C. In terms of tone, I would say that I liked it a little more than the sweetone, but not by a big difference. The only significant difference I would say is that the original requires a lot more air to play, resulting in me losing my breath earlier. Between the two, I would prefer the sweetone. Also, the original has a strange smell at first due to its wooden mouthpiece, but you get used to it. Overall, the sweetone seems easier to play and it is also 5 euros cheaper.