I thought I was fairly happy with the pair of R04Pro ... however, they've never felt quite right in the ear.
Recently purchased a pair of M9Ps, and while those feel right at home in the ear, even with the stock tips, the sound while not complete junk isn't nearly as good as VSonics. Cable on VSonic is also far superior, IMO.
Not surprising, considering the difference in price points, yet holy grail is still out of reach, and search continues. Given this data -- what should I try next ... preferably in the $50-100 price range.