the best quality is Rhytmos, it's a very well designed, polished game. the only drawback is that some of the songs are not my style (i'm not really into RnB for example)
Propis is also not bad, but the english translation is awful, and it's more like a good amateur game than a professional one. nevertheless, it wasn't a bad buy for that price, so i'm happy with it
i also purchased Patissier, but played only 2 or 3 levels just to have a look on it, it seems interesting
but i'm looking forward to the oncoming games you can see in Caanoo teasers (3D adventure, etc), I hope we won't have to wait too long for them