I have recently tried Google Drive, OneDrive and Amazon Cloud Drive and none of them compared to Dropbox at all. Syncing was slower or more inconsistent. Dropbox syncing is not always perfect but seems to be a lot better than everything else.
The UI, both in terms of desktop client and website were slower and clunkier with GD/OD/ACD. All seem to make sharing more difficult than Dropbox does. Versioning is questionable.
I haven't tried iCloud Drive in earnest but at first glance I don't see any way to check the status of syncing, nor do I see any indication that files are versioned. So that's really a no go right there. Will it one day be better than Dropbox? Maybe. But it isn't today.
There's also silent corruption and bit rotting that may happen locally and which you wouldn't notice on any of those services. Particularly if you use old filesystems such as HFS+: there are quite a few stories of people losing pictures or finding artifacts in jpg/raw files years later.
I'm sure you're not, but if by any chance you're relying on Dropbox versioning or whatever similar "backup solution" please consider alternatives.
I pay something like 10$/month for 1TB with Drive.
So either a typo or maybe they're saying they have 100GB of stuff in a 1TB plan
I'm still on Dropbox because:
The price is fair IMHO, because that's all of my data. Sure, I'm not paying $5/month for a password manager or other unjustifiable crap, but 13 EUR/month (includes VAT and the versioning add-on) keeps my 100 GB of family photos and my books and my work documents safe and available everywhere.Also, Google killed Google Talk, Google Reader, Picasa (partially) and Wave. And in the case of Microsoft, OneDrive is just a useless freebie they toss along with that expensive Office 365 subscription in order to justify its value.