your tastes seem a little scattered. not in a bad way, but just judging from your collection I can't really pinpoint what exactly your style or favorite type of fragrances are. I would probably start sampling some of the more well known niche fragrances before buying more designer fragrances. I've ended up selling or swapping away a good portion of my lower priced fragrances after finding more things I really like at the other end of the spectrum.
For future purchases I would think about adding fragrances for specific uses. Maybe a few day time or summer fragrances. For work. Etc.. Personally I've got most of my scenarios covered, so I pretty much buy things these days for the "art" of it all. Or when I find a fragrance that features a note I like in a well executed or creative way.