I don't have the curved model but the P. Mauriat system 76 2nd edition straight DK soprano I have has very good intonation, perfect ergonomics, and unlike what was mentioned in an earlier post, the spring tension is just right on this model. I use an SR Tech Pro Metal mouthpiece with VanDoren 2.5 ZZ reeds, and to my ears, the sound is on the dark, mellow side.
If you have an opportunity, you should find a dealer so you can evaluate it yourself, which of course is the ideal situation.
Here is a good recording followed by the user's personal comment on the curved model.
https://www.youtube.com/watch?v=dL1OQWEP5lk