Best for Non-native speakers

I will get straight to the topic.

Bought the verbal live prep last year around the same time combining with a friend of mine. In the initial stages did not use it much but after that the videos became a habit.
Video tutorials are pretty good, in depth and quite interactive. Julio will become you best mate after some time :)
Additional pdfs are pretty awesome too and they basically covers all the exceptions to the GMAT verbal rules.

The best part of the complete course was the scholaranium. I used it extensively during my prep. This particular feature is a must have.

Now some negative aspects. Live course was pretty much a waste. I dont think it is worth the money. I made a mistake initially by opting for the costliest one.
Reason i am saying this is the live prep session is too slow to follow. This happens because there are students of every level and hence the session is slow.

So i would suggest to go with the Online course and enjoy the studies. And yes, a must have for non-native speakers.

Cheers!!