Sending large files with Pando

I have just downloaded/installed and sent a trial 3.5MB file to a client using Pando 1.2 beta.
Hope it works.

I know of 3 or 4 other programs for sending files. Zapr is one I looked at.
Have you tried any of these file sending programs? If so, which one and how did it work?
And yes I know that you can send (usually) files via Instant Messaging programs.
Pando has an add-on for Skype 3.0 beta that looks interesting.

http://www.pando.com/
http://www.zapr.net/index.aspx