Hey Axe -

I use box.com. The advantages of it are lots of free storage (10 GB) and the ability to play directly from the site. Meaning, you don't have to download the file and listen. Box also doesn't limit the length/size of the file.

Soundcloud limits the length of a song you can upload.

I've been using box since January and have yet to run into a problem. I use it to post recordings here and also share recordings of band rehearsal to my band mates.