I'd suggest scanning a selection yourself - using both scenners for quality comparison. See how long it takes to scan, crop, tidy-up each photo. You'll soon get an idea if its for you. Once you've found the settings you're happy with, the hard work is done and you just need to set aside time each day to get it finished. The key is not to make yourself sick of it - maybe do 10 a day. How many does she have?