i did the shopping cart search again, to get the link to put in the previous posting. THIS TIME, the second link down had what i wanted- side by side feature comparison. that wasn't there the first time i searched. i'm sure, because i Ctrl-clicked every link on the google results, all the way down the page, and looked at every tab that opened up.
most of them are still useless, or only vaguely useful.
make me lie google.