Have you tried FilesDIRECT? It lets you send files up to 2GB, store up to 30GB (to start!), has tons of features and a 1 month free trial. I believe there's a 50% off sale going on too, but I'm not sure if it's still on...

I like filesdirect - the free, customizable upload and download pages are a nice touch. (http://www.filesdirect.com)