Out of those you listed, the RE0 is likely the most balanced, and if you want that sound, great, but I would not go for the RE0.
-Durability issues
-Inferior Isolation
-Less 'Accuracy"
The above three reasons are disadvantages of the RE0 when you compare it to the Etymotic Mc5, a better isolating, more durable and natural sounding earphone. The Mc5 is a very durable, tested to be more accurate than most anything in their price range, and one of the best isolation earphones on the market.
-Memory free Mylar Cable (very durable)
-Accurate Frequency Respose (music sounds real, especially vocals.)
-High Isolation (plenty of different tips too! Not just different sizes, but different materieals, shapes, ect.)