The fit and isolation are a big plus. Plus, theyre probably more comfortable to sleep in than my M80s. From the Heir thread, ive learned that depending on one's ear canal, the sound will change for the better or worse with CIEM/IEM.
I do wish i could afford custom art though, but most likely i'll just keep it clean without any. Looking at those C4 right now :P
*wow u guys are fast
Just save up a bit more, if you're already spending a bunch on customs, go all out!