Which Scanner?

[Lodge Family]

Hi All

My wife is into restoring old pictures and wants to buy a reasonable  
scanner for the purpose.
She has mostly black and white pics. She wants good quality scans to  
edit in photoshop.
Can anyone recommend a scanner, willing to pay for quality, say  
around $500 or so. (more if required)
We have slides and negatives, but these are not priority at present.
She has and epson 610 perfection.
Thanks in anticipation.

Rob