OPI or CND course

[natlaw]

Hi I'm a hairdresser, but I'm really interested in doing nails I've looked at the cnd complete course and opi manicure/pedicure and the foundation course. I don't know which to do as they both cover everything, I want to do the best course, so any advice would be much appreciated as I'm in a right mess over which to do as I want the best training possible to help be become a good nail tech X