I have both, firts I bought it NBNG... then I saw an ads of Twisted BBM System and decided to use because looks more easy to make them in that way than Figure 8 method or wrap it from NBNG.
But BBM are kind of time consuming and hard to keep the ribbon in the template as Sweet Cheeck said, and for me every single time I try to make them the loops was uneven, I've tried and tried but no success.
Anyway... so I decided to try NBNG again (wrap it system) and... it's work!!!!
finally I got my twisted bows!!!
I voted for NBNG is worth it!!!