The Yamaha Sweet voices are the patches that compare to Roland's basic patches.Sweet, Cool and Live are pretty much the only great sounds on the PSR2100..the XG patches[yuk]..

Tom You are correct, I think a G1000, EM2000 in good condition is a better buy..you may find one for $800,but I doubt you would find one like mine for under $1200..
Also, $800 is list ..street price around $700..
The PSR definately has the advantages[features only] over the EXR, but playing the board and hearing it can make the EXR favorable...

For the difference of $500 cost between the two, excluding the Yamaha harmonizer,...the better value is the EXR..