I have been a big fan and user of Dropbox for a couple of years now and with their refer a friend get some extra storage I have 1 account up to 4Gb of storage and another up to 3Gb from the standard 2Gb issue.

Just this week however a friend of mine sent me a link to some rather large files via a service called SugarSync.  I had not heard of SugarSync before but upon investigation and now use (needed to download the files) it appears to be a lot like Dropbox but with 5Gb of free storage (recent change) and some other nice Sugar Sync features like sync any file whereas Dropbox makes you create the files in the Dropbox folder.  Let me know in the comments which one you use and why.  Now the big question is do I change all my friend and family over to Sugar Sync or wait for Dropbox to catchup?