For me, the choice isn't about price; it's about functionality.
I desperately wanted to like iCloud, but Apple missed the mark on this one.
First, the way they try to "integrate it" makes it difficult to manage your data. Don't want your iCloud stored on your root partition? Huge pain to move. Second, it's hard to tell exactly what it's doing, when it's syncing, what's in sync, partially syncing content, etc. In other words, clarity to what's occurring is lacking. The list goes on, but this was enough for me to drop it.
Google Drive got it right, which is what I'm using. (Of course so did Dropbox, who pioneered it)
Until Apple allows more flexibility as to what's synced, how it's synced, where its synced, I won't be going back at any price.
(Note: I do use iCloud for photo storage just because it's easy, but I'm not using anywhere close to the current limits).