We started out with Asana and moved to Trello. The problem with Asana was that it was a very good write only interface, but ultimately it didn't work well for

We started out with Asana and moved to Trello. The problem with Asana was that it was a very good write only interface, but ultimately it didn't work well for the team, because reading is just as important as writing. It took a little bit of effort to get going for Trello (eg which boards to have) but ultimately it has worked out extremely well for the whole team. The ordering of the cards providing prioritization is great and being able to assign more than one person to a card helps in some situations.