70-647 training videos

Hi,

Please can anyone recommend suitable training videos for the 647.

I've got a couple of books on the 647 but I am finding them hard work - a lot of reading.

As light relief, I have looked at Trainsignal and CBT Nuggets videos.

Are the CBT Nuggets for this exam worth it as they are quite more
expensive than the Trainsignal ones.

Any thoughts please.