Review (5/5): Rose Sugar
All Bobbi Brown lip glosses are worth the cost, IMO, based on coverage, durability, moisturization, quality of the brush...basically, anything you'd want in a lip gloss. To me, it's just about color, because the product is excellent.
You could (and I have) bought lots of other lip glosses that were cheaper, that I never used or threw away because the color was uneven, not true, wore off quickly, felt gross, leaked out of the container, the brush was crap, etc.
"Rose Sugar" I first purchased over 10 years ago. It's a great color, goes on very evenly, lasts a long time (unless you're eating), and is neutral enough to match almost any makeup/clothing (except bright reds/oranges), but intense enough to give emphasis to your lips. It works for many skin tones, I've found, since I've given it to several friends over the years. My other favorite is "Cocoa Sugar", but that's even more neutral, a very natural look for my coloring (olive/tan). Rose Sugar gives more of a finished look and matches almost anything. Absolutely worth trying.