Another aspect to in-ears to think about is the type of mould you are buying: 1. the soft rubbery mould (e.g., Sensophonics, Etymotic); and 2. the hard plastic mould (e.g., Ultimate ears)
I've been using Ultimate Ears (UE-10 Pros - hard plastic) for about a year now, patched into a Mackie desk where I can control the console mix across the band and vox. I used to have Etymotic ER-15 moulded filters (soft rubber) which cut 15DB off the noise across the whole spectrum.
The soft ones are definately more comfortable over longer periods of playing, but tend to go mouldy and gradually spoil over the years. So far, the UE's have been really durable and have been the best sounding in-ear electronics I have used.
Just something to think about if you're contemplating making the investment. In any case, to me, whichever you get, the investment is worth it... you really can't put a price on losing your hearing. Hope this helps.
-s