What do you recommend for professional file sharing?

I would like a solution with OS integration. Maybe you know the Pando.com solution? Well, it would work if it didn’t demand that the other side also install Pando.

Basically what I want is to be able to right-click for instance a 2gb file and then click an option to share it online and get a private url to download that I can provide to my customer.

My ideal is as simple as Pando on the sending side (with OS integration — not via browser — and that doesn’t lose the whole upload with a network interruption) and as simple as for example MediaFire.com or Zshare.net on the receiving side (works through the browser with no additional plugins etc)

Also zshare.net has the ability to preview videos right on the browser which is very useful. If zshare would have a desktop client for sending it would probably win me already.

Thanks for all your insighs.

P.S.: the ability to brand the service is important… to make it more professional