LindaFus,
I guess it's really just a matter of opinion in regards to the sound quality of these two keyboards. I went back to that store today and to my surprise, he had the WK-1800 on display right next to the CTK-671. So I was able to do a side by side comparison. After doing the camparison today I find that I still favor the CTK... I think its sounds are much warmer than the WK. I tried all the pianos passed 200 on the WK as you suggested, but I still wasn't impressed. The sound set on the CTK uses the MZ technology and the WK only has a few voices like the flute, and sax. Also I think if the CTK-671 had the same speaker system as the WK's you'd really be able to hear the difference. Again, it's all a matter of opinion which we are all entitled to. I honestly consider my ear for a digital piano sound to be rather good because of my history with the instrument. I've been playing for 21 years, and actually my first set of keys wasn't a keyboard, but was a Baldwin Grand Piano. My parents realized at an early age I had an ear for music and they bought me a Baldwin Grand of all things to learn on. Even though I couldn't touch the pedals, my father made this great device that sat over top of the pianos pedals and he the device made it so that I could use the pedals. Also I spent at least 15 years working along side of my uncle who tunes, and restores pianos.. All this has I guess you could say fine tuned my ear.... Question to anyone else out there in regards to perfect pitch too. I noticed a posting about this not too long ago.. Anyone have this? I have perfect pitch and I can honestly say it's a pain in the but to have. I never took lessons on it, but just had the ear for it. I find it to get in the way most of the times..... I'll often hear something or someone playing, and having perfect pitch sucks, because you can easily pick up where the mistakes are made, where the average person cannot detect it... If I had the choice I would get rid of it, but I can't....

Squeak