What is the best software to convert MOV files to DVD?

I want to burn them as a backup.

For backup? Then you do need only a data DVD, not a video DVD, and the DVD does not need to be playable in a video player? Export your videos to a folder and use the Finder's command "File > Burn .... to disk".

But if you need a video DVD you need indeed additional software like iDVD, Toast, or Burn, see:

How to create a video-DVD? (Macs without iDVD): Apple Support Communities

and for some background reading:

Why is there no iDVD on my new Mac?: Apple Support Communities

Regards

Léonie

So if I want to burn the videos so I can play them back on my MBP, how should I do this? What type of DVD do I need?

That will depend on the drive you have in your Mac. Look at your system profile:

• Click the -menu in the upper left corner of your screen in the mai menu bar, and select "About this Mac". In the About panel press the button: "More info", then "System Report".
• Press the "Storage" tab and scroll to the bottom of the panel. That will show you your Drive and the types of CD and DVD you can write.
• Buy one of the types you see there. Best buy high-quality brands, not the cheapest bargain brands - those usually will produce lots of read/write errors. When burning, select a slow speed. That will take longer, but give better results.

To burn a data dvd with your videos: (from the Help text)

• Insert a blank disc into the optical drive.If you see a dialog, choose Open Finder from the pop-up menu. Select “Make this action the default” if you want to open the Finder every time you insert a blank disc.The disc appears on your desktop.
• Double-click the disc to open its window, and then drag the files and folders you want to burn to the window.Aliases to the files are placed in the disc’s window. The original files are not moved or deleted.
• Arrange and rename the files.When the disc is burned, the items on the disc will have the same names and locations that they have in the disc window. After the disc is burned, you cannot change them.
• Choose File > “Burn [disc],” and then follow the instructions.The files that the aliases point to are burned to the disc. In addition, if any folder you added to the disc contains aliases, the original files for those aliases are burned to the disc as well.

To burn a video DVD to play in a video player see Karsten Schlüter's User Tip I pointed to above.

I have also been looking for a good solution to copy video from my Hi-Def camcorder on to a video DVD. I have looked at Roxio Toast and DVD Cloner for MAC. Has anyone had experience and/or success with either of these?