Trello or Asana for Building out our company?

[Steven]

Want to hear both biased and unbiased reasons why our company should use Trello and why we should use Asana for our task management software. We are starting to scale up our reputation management agency and want to have software that will help us organize and detail client work that will have a strong emphasis on photos and html text as well as files via excel spreadsheets. If it helps to see what our company does you can see that here and then I would appreciate both biased and unbiased reasons for supporting each platform so we can make a decision looking at the whole picture.