Hi. I did a lot of research before settling in what training I would do. By far, the two most highly recommended were CND and NSI. Nailzone did come up when I did my searches, however I was concerned that their courses were so much shorter and cheaper than those with the best reputations. The last thing you want to do is come away from a course without feeling that you hzve the confidence, skills and knowledge to progress in the nail industry. I went for NSI (the Scottish beauty in the end as they were in Glasgow whereas CND(the fingertips centre)were in Edinburgh, so logistically it was better for me and I was convinced both could offer the level of training I was hoping for. I'd re think my options if I were you and make sure you are 100% sure of the company and training before investing in them. Hth. Y