Hi Hammer...I Somewhat agree with You and Your Friend...NONE!...With the Stipulations You layed out...Not knocking any keyboard in general, but I think the Manufactures can do ALOT better...Many have talked before about synths coming in at less weight and quality (Roland)76 Keys...Yamaha 61 Keys etc...I just purchased a (Still in the Box yet)Casio PX-320 Priva for My Wife and I to Play with also...26.4 lbs 88 note Weighted Scaled hammer action!...Now if Casio can do it in an 88 hammer action, SURELY the BIG Guys can do What We are Discussing???...in a Arranger!....My Two Cents....Harold...P.S.. I'm Getting the Priva out of the Box Now!