I have several. I think they're great. Mine don't have subtitles though, which is ok because Portuguese is so similar to spanish that I can understand them.
She uses the same format in all her DVD's, which is that she first talks about the move and explains it, then she demonstrates how it's done, wearing just regular class attire, usually lycra pants and a hipscarf, and then she has one of her dancers do a performance in full costume using the move that she's just taught. This is done for each and every move. The quality of the DVD's is very good. Well lit, good sound, and very clear.
I have:
Hip technique...which is great. She teaches all kinds of hip moves.
Traveling steps tecnique...Very very good. Lots of travelling steps
Begginer Technique...teaches begginer steps
Veil technique..interesting and fun moves with the veil
Drum solo Techninque...very good also
Rhythms #1...teaches arabic rhythms and instruments
Rhythms #2...I can't remember what's on this, but I have it, and its different from rhythms #1.
And a performance DVD of Lulu and Soraia..mostly Lulu though. I like it.
I think they're worth every penny, and they teach many of the same steps we already know but with a brazilian "twist".

There's also a few steps that I haven't seen before or that are done in a different way. The costumes in these videos are a feast for the eyes. Very different to Egyptian or Turkish costumes, that's for sure.
Regards
Priscilla