Completely different, I'm CND trained and have tried most systems over the last 12 years. Young Nails behaves completely differently, it's much slower setting so is moveable for quite a while, whilst training it can be useful but as an experienced tech it drove me mad. Quality wise they are very similar, Young Nails is a great product as is CND. Price wise I think they are both in the more expensive bracket than most, but you certainly get what you pay for with both.