I like the ease of organizing tasks in both order of importance and with column descriptions. I also like creating custom labels.
If you like the Kanban methodology, Tracked is a very good tool for the follow up. Customer support is also very good.
Great product, easy to use and very affordable price. The addition of the 'My Kanban' option was great.
The only downside is that it requires a Chrome browser extension to function but this seems to be a limitation of Basecamp’s add-on integration model and not because of Tracked.
This made the naming difficult because we had to develop a naming system that was specific whether you were viewing the to-do lists or each individual to do. The updating was also weird sometimes.
The fact it's not stock with Basecamp. Will automatically log out every so often, so the first time you have to log in it can be a little confusing.