me using for my Acer scanwit too...so far result are better that the mirascan come with the scanner. but need a lot of tweak before u got it right. Poor user interface i think might due to the fact that this is a 'one-man' program (i believe), u can see the author basically did not care much about a proper user interface since version 1. So do read up the document before start scanning. Multiple pass and restoring color seems not much effect on my scanner......
by the way this soft get a good regconisation from the film scanner user, i think it deserve it except the author could have improve the interface before he decide to put a price tag on it....