I, too, don't find the name "Fragrance Niche" very appealing. It's like calling yourselves "Woody Aquatic", too descriptive and not very original. I don't mean to sound harsh though, and anyway it's your business, but something more poetic would have more cachet to it.
As for the logos, the ones which feature the big "N" remind me too much of Nespresso, and most of the others look like chocolate brands. I would go with #5 or #46.