I tried it out, too. Unlike many of my fellow forum members, I didn't care for their products--considered blasphemy, but I felt while they sounded good, just too difficult to use, and there are alternatives out there that are fine for me. However, I have no real problem with the idea of subscribing for an all-you-can-eat buffet of instruments, so if you like their products, or want to try them out, there is really very little harm in doing so. Although installing and managing the whole shebang available in Composer Cloud takes a looooooong time, initially.
Good luck!