I have always loved Nicholas's documentation. By following its instructions and precautions, I was confident that none of my 5 live sites would be shut down, even though I was running powerful tools that touched the main database and other sensitive areas.
Although this is the review of the non-commercial version (as specified by the rules here), I also thoroughly endorse the upgraded version that I purchased and used. I believe that the benefits are worth every Euro.
Had I known about the issues that the Akeeba products address, I would have been anxious to deal with them. Fortunately I had the tools at the same time as I found out about the weak points of entry.
If I could give it 6 stars, I would!