Should I use Compressor 4 before sending over to DVD Studio Pro

I am making a FCP X movie and when it's finished I want to put it on a DVD using DVD Studio Pro. I have done this before but now I'm wondering if I should first export it to Compressor 4 and then to DVD Studio Pro. I understand that if I was puting it on YouTube or an iPod device I would need to Compress it however why would I need to go to Compresss 4 first if ultimately going to DVD Studio Pro? Would I get a better Codec quality then what I get from exporting in FCP X using their default Compression format i.e. Quicktime? Should I use an Apple ProRes Compression from Compressor 4? I guess I really don't understand the encoding quality options very well however I do want the best quality on my finished DVD. The DVD or Sequence is somewhere around 20 - 25 minutes if that makes any difference in your response.