Micro ring/i tip hair extensions

I am thinking of training in the new year. I already am trained in LA Weave and Nano Rings, and try and do weaves as much as possible as nano rings take quite a long time.

Are microrings and itip pretty much the same application method? Does everyone find a large demand for these type of hair extensions?

Also i trained with Oakley and i would be happy to go back to them again , but can anyone recommend any other company?