I've been a SpiderOak customer since 2011. Long story short, I agree that performance is slow to the point of abysmal. What I will say though is I have yet to find any alternative that is a complete package solution that comes even close to matching what SpiderOak currently offers. On servers I tend to use etckeeper + tarsnap, but on the go traveling around the world I need a client-focused cloud backup solution with serious security, and frankly nothing else exists that I've found.
If you have a realistic option (e.g. a fully supported solution) from another provider I'm all ears, but frankly SpiderOak has been good in that they have lost 0 data for me and have been able to successfully restore several times. If they could just double or triple the speed for uploading it'd be a huge boon to me, but realistically most of the places I've gone in the world being able to upload 2MB/s is faster than my local Internet is capable of.
If you have a realistic option (e.g. a fully supported solution) from another provider I'm all ears, but frankly SpiderOak has been good in that they have lost 0 data for me and have been able to successfully restore several times. If they could just double or triple the speed for uploading it'd be a huge boon to me, but realistically most of the places I've gone in the world being able to upload 2MB/s is faster than my local Internet is capable of.