The Kiwi Ears KE4 is a $199 2DD + 2BA isobaric set that nails a very “meta” kind of tuning: balanced, smooth, and easy to recommend. I like it most for its consistency across genres and its inoffensive upper mids/treble, even if I sometimes wish for more top-end energy and bass texture.
Pros
+Superb tonal balance with a safe, versatile tuning
+Full bass that doesn’t bleed into the midrange
+Rich, thick midrange with natural presentation
+Inoffensive treble with decent air and detail
+Great fit stability and near-perfect seal (for my ears)