I was thinking, since there are many different types of diapers with different Features we can have a page on Wiki, a table for example, where, for each type of diaper we use, we give him a vote from 1 to 5 for each features.
a table example could be:
name cost thickness absorbency bulge design overall
x 3/5 4/5 4/5 2/5 2/5 3/5
in this thread we say our opinion about each diaper and in a week we'll write the page that will be updated every week.
If 2 or more people vote for the same diaper we make the average rating.
if somebody have other ideas Suggestions are welcome.