My recommendation don't even start a free trial.
I found it interesting that if you do a google search on "box.net" complaints one of the top hits ia a blog about how box.net sucks. It goes on to state that only 2 in a million claim that box.net sucks and then has a link to a free trial of box.net??? Slippery at best.
Why didn't they research box.net complaints and do the same analysis? My guess - they probably did and didn't like what they saw.