I like that they are constantly improving their platform to make it easier for us as an agency to do our job effectively! They really listen/care about what we need from them in order help improve how things work internally too - which is great when you're working remotely but still want some face time :) We use factorials primarily at this point because its easy-to-use (and free!) compared to other platforms out there -- though if something better comes along then thats fine by me!! The ease of setting up campaigns between clients has been helpful so far; however i would love more control over my account page within each client's campaign area than currently exists now. It can be difficult keeping track sometimes due to lack of detail regarding where certain data resides or who owns it vs being shared amongst multiple accounts.