Hi Jacqui. Do you mean that you want to train as a nail technician?
If so, then I'd recommend Creative. Why? Because I did a lot of home work before I decided on a company and I feel it was money well spent. The training is brilliant and they are world leaders in their field. More importantly, you're only a phone call away from advice and troubleshooting solutions. Also, it will only enhance your business to say that you've been trained by them.
I can only comment on Creative as I haven't trained with anyone else. However, loads of geeks on here have trained with other companies and have had excellent results.
Good luck. xx