I've been using SkullCandy Titans for years, but also have a Scala G9 in one helmet, courtesy of @
Yakaru.
The SkullCandy provide enough isolation for me to hear plenty well, both music, exhaust and surroundings. Been looking at the LG Tones for a replace because the cables eventually crap out on the SkullCandy. But at least they've got a lifetime warranty, so replacement is cheap and easy.
If I don't have music on, I've got -39dB plugs in. I like my hearing the way it is.