I have a Perfection 1660 Photo and have been very impressed with the results.
It was bought mainly on because of its resolution and the fact it had the easiest to use negative holder we had seen amongst other choices.
It has been used to scan in the negatives from our wedding photographer and then print out on photo paper so that we could give them as gifts.
Very little diffence on comparison, but this depends on the scan setup and the printer.
Very impressed with the software, the OCR functions works well with different types of text and it makse a handy photocopier.
I would recommend this scanner, purely on experience and satisfaction of use.