Xdrive is larger- Beinsync only offers 1gb. Which one your think is better?
I've never used beinsync actually I've never even heard of it.
I guess it just depends on what you need.
Xdrive is pretty cool though and I use it every now and then. 5gigs isn't enough to seriously make back ups but I have uploaded a little over 3 gigs of music for when I'm at someone else's computer.