The issue with the transparency media suggested here is that the image will appear grainy due to the limit of the amount of ink that they can hold. ...
I guess the big difference is that the Super Symmar XL is designed as a moderate wide angle for 10x8". All the others are for 4x5/5x7. The newer they...
You do have an array of color adjustment tools in most scanner software. Also, if your system isn't calibrated the color could be off on your monitor...