From simple DB/Information imports/exports to an entire site backup and a fully automated install, I would recommend Akeeba. And then, when all else fails.... there's Akeeba. Nothing else compares to ease of use, quality, reliability and outstanding support. I've tried many. Why keep looking when you've got the best?
And then there's the free "Admin Tools. This one is worth it's weight in gold if you have file permission errors during transport or migration or a simple fudge on your part. One click and you don't have to spend time trying to find which folder/file out of thousands isn't set properly. It's great for noobs and pros alike. There are even more time saving goodies if you go Pro.
The documentation probably has the answer if you run into a glitch, but the developer always has a timely response. If he doesn't know the answer, he'll work with you until the problem is solved. You can't ask for better than that.
It's definitely a project worthy of support.
www.akeebabackup.com/