The Vision Series backdrops are worth the money, IMO, I use them on DVDs and as transitions fairly often. They're also wonderful for lower thirds. They are stock footage, but nothing like the stock generated media.
it would take a lot of work in Red to create some of those looks, and you'd need a particle generator for some of the styles, plus a lot of rendering time to create all of those clips.
For the low cost...the Vision libes are great to have.