I need help urgently since the sale is ending very soon and I need to make my decision.

I need to have good pro-quality sound voices, styles and ability to save settings (transpose, styles and sounds) into registration memory. My playing style is similar to Uncle Dave - I use manual bass on left and right hand comping with drum rhytms only.

I have considered the following and consider them inferior for the budget less than $800: PSR550, Casio keyboards(WK1800 and MZ2000), Yamaha DGX series unless I miss something.

Any recommended website that offers real good prices is also appreciated.