A timely post - today Dropbox informed me I was out of space on my free account which I use for backing up photos from my phone. Fair enough. I don't mind paying a reasonable price for stuff.
Well, until I saw the prices. In order to upgrade my 2GB free account, the next step up is 100GB at $10 a month. That's a lot of money over the year. Backing up photos from my phone (which is all I use it for) is not worth £80/year, that's ridiculous. So now I am going to look into using something else, although I have no idea what yet. Dropbox came with the phone in some sort of marketing tie-in, so seemed convenient at the time.
I am sure they would get far more people signing up if they had a $1.99/month option for 10GB or something. When am I ever going to use 100GB from my phone? There must be thousands of people like me who just use it for that as it came with the phone who don't want to pay that much for an excess of space. It's all very annoying.
It's never crashed, but I've hardly been a complicated or intensive user, it all goes into the same folder!
I use Crashplan to back up my decent dSLR photos and videos (plus general backup) for what it's worth. I have over a terabyte on there right now which I happily pay for. I don't believe it is as user friendly as Dropbox but for my purposes it works just fine.