I've done the opposite. For me it doesn't matter how fast the uploads are (within reason), it matters whether I can restore reasonably quickly if something crap

I've done the opposite. For me it doesn't matter how fast the uploads are (within reason), it matters whether I can restore reasonably quickly if something craps out. CP does have a disadvantage though: their client is written in Java and if you have a lot of files it takes up a ton of RAM.