BigTray: Blenders
Features buying tips and advice for kitchen equipment used in restaurants and institutional kitchens.
Consumersearch.com: Blenders
The site identifies which products reviewers like and dislike, where they agree or disagree, and why.
Handheld Blenders
Discussion of features and brands from Epicurious.
Mix, Blend, Chop, Process
Seasoned Cooking article from 1999 about blenders and food processors.