Casio definately is not a toy piano, i can imagine however a salesman making such a remark because the profit margin on Yamaha instruments is bigger then on any of the other brands, thats a reason why all professional music salesmen will often try to sell you a yamaha..

Casio piano, ep , pads, synths and strings hold up to the cheaper yamaha models.. where Casio still is of the mark is with many of the other orchestral sounds, brass, winds and such often sail behind in quallity and are very very basic..

I really like the 88 keybed thats in the casio, best thing is, you still have grip when your fingers are sweating and moist.. it takes some getting used to the actuall feel, but after that its top.. also its a tripple sensor action... only the high end yamaha action found in their pro models i like even better then this casio action.. but then, that would require you to spend thousands of dollars on a cp4 or the like...

Alos take into account the Roland fp30 and the kawai es110 they also offer great action and top knotch piano sounds under €1000.. the fp90 and es8 are even furter ahead, but more expensive... but both come very very close to a real granpiano feel and have high end sounds on board..