Hello and welcome to basenotes!!
You sound very confident in what you like, which should make it easy for you to continue to find new scents that tickle your nose in just the right way.
Based on what you pros and cons of scents that you have smelled I would suggest the entire L'Artisan line. In particular, I would like you to test: Jour de Fete, Tea for Two, Safran Troublant, and Voleur de Roses. I think that you will enjoy this fragrance house so I would like to hear back from you if you end up testing any of their scents.
As for your question... There is no right and wrong when it comes to using pure, natural, synthetic, or any other kind of oil. There are people who like some smells and people who despise fragrance royalty. Pure essential oils does make a fragrance worth testing. There has to be the right combination of ingredients, not matter how pure or diluted. That is why we have the choice to select from the thousands of fragrances out there. If they sound good and they aren't, oh well. It just wasn't your cup of tea.