Review for gContactSync by Jack O\'Fall
Rated 5 out of 5 stars
Tried Zindus and Google Contacts. Both refused to pull down addresses properly from gmail. gContactSync was able to do this properly. Have only used for about 30 minutes, but MUCH happier than the other two choices.
This review is for a previous version of the add-on (0.2.13).To create your own collections, you must have a Mozilla Add-ons account.