If “your whole life” is on one laptop or smart phone, what happens if you lose it? If you use a desktop at home and a laptop or small netbook when you travel, how do you make sure you have all the files you need on both devices, in their most current form? What if you need to get one of those docs from a third device, like an iPhone or iPod Touch?

I used to sweat and worry about these questions before I discovered SugarSync a couple years ago (including when I had GoToMyPC, which was often a bust). Now I’m completely relaxed when I travel, knowing I can get to anything I need from any device anywhere. It’s a file sync program, an online back-up program, a file sharing program, and a photo upload program all rolled into one. At a price that starts at $50 a year for 30GB, it’s really cheap insurance and is cheaper than a sleeping pill prescription. If all my devices get wiped out in one day and the backup hard drive does too, I’ve still got my files and photos.

I seldom feel comfortable raving about a software program as there are always a few annoyances that keep it from being as useful as it should be and most of them let me down on a regular basis. I can honestly say this SugarSync one works like a dream though. You just tag the folders you want to share between devices and with “the cloud” and let ‘er rip. After the files, photos, songs, and videos are uploaded, each time you make a change to any of the folders on any device, behind the scenes this program makes the updates. It works in the background, seldom taking up much in the way of resources or slowing down your system.

Then you can access those files from either registered device or just log into your dashboard online and view or download what you need. You can also e-mail a file link to someone (like YouSendIt), attach a photo to send them, or share a whole folder of files/photos by invitation.

What’s really cool is, you can do all this from your mobile device as well. For the iPhone or Touch you just download the app, sign in once, then magically all your stuff is there. (You can even put files into a “Magic Briefcase” to get at them quickly without searching around.) If you take a photo with your iPhone, it’s automatically added to your “mobile photos” folder and it’s on every device you have registered—no cables required.

In case all that is not enough, the file syncs are done with SSL encryption so nobody snoops, plus they keep the last five versions of your files in case you make changes and then need the old version. And on top of that, you can show off photos from your home PC or stream music that’s on your laptop from your smartphone or Touch. How cool!

There’s almost nothing I wish this could do that it doesn’t and if you don’t believe me, you can take it for a 30-day trial run or test out a 2GB version indefinitely. To me that shows a lot of confidence in the product and it’s well-deserved.

Plans range from $50 a year (or $4.99 a month) to $250 a year for 250 GB. Here’s the pricing breakdown.

SugarSync Online Backup, Sync, Share – Try FREE for 30 days

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