I had dropbox for awhile and I answered a good question which they gave me ~300GB. It was convienent for a few years but I slowly started to not use the service. Collaboration with friends moved to other services. Now, I plan on moving my files off of it to Amazon. I only paid for the pro version for version history. I think its nice as a free service but now since I have so many Apple products and Airdrop I don't really have a need for the product at all. Also, if I want to share larger files or work documents I would always use google docs (now moving to aws work docs). I hope to be off of both Google services and dropbox soon as I really only use Dropbox for archiving stuff I don't want to lose.

I think my answer is biased due to the 300GB unlimited account I have though.