Hi fusion for hair, I'm in the same boat, have been looking into hair extension training for a few weeks now. So far I have looked at Balmain, Lushus, KM and great lengths. I have now descarded KM from list as I feel they are too expensive as I would require training at home (£799) for two methods. Lush us are looking good at the mo, £630 from home for 2 methods or if you can get to one of there training sessions it is only £420 + model to pay £50 for extensions.
Balmain only use training heads which you supply yourself, plus there methods are slightly different as they use there own bonds so unsure; If you purchased there kit, not site you would be able to use with other brands, does anyone know? Not due I like the idea of training on a block as they don't feel pain and cannot say if your doing a good job but obviously Balmain is a good well known brand and that is swaying me. Great lengths; seem very professional- think I would get best training with these guys as course is 3 days long but I will have to travel as there is no training near me :/ not good on motorways! Also I have yet to get a price for training as I am meeting rep on Monday to discuss. Great lengths again do not use universal methods as far as I know? So if you buy their kit, you cN only use great lengths hair.
Sorry for essay, hope this helps