Nick , i have to clarify a few points..First of all the PSR series have always had key contact problems..They are not as durable as competition in the same class..[Ask any honest technician]..

Playing for your own enjoyment in your bedroom and playing on stage..is different..it is called energy level, and believe me..the keys are subject to more abuse..

And 3rd..Superior sound is only one's opinion..I for one do not like the sound of Yamaha, even Tyros2..It is just preference and not demeaning..I prefer the "live" sound of Ketron, Roland, and even Korg ..over Yamaha..[Yamaha is too compressed sound for my taste]..