Gary, if I was 10 years older..I would buy the Bose..

As for Keyboards amps..for those that I can remember with an off the cuff rating 0-100..
First the ones that I kept..
Roland Keyboard 100[still use them]...95[A]
Roland Keyboard 60[yep still have it]..88[B+]
Roland KB 100 [new style]............85[B]
Yorkville KB300 [Great stereo amp]...95
Gallien Kruger 200................75 [C]
Toa 1, 2 and 3....the 15"..80, the others..76

Now the ones I didn't keep very long..
Peavy KB 30 , 100, 300 ALL......75
Prime......68[C]