Man, what a difference a year (or two) can make on your perception of audio. I just started taking audiophilia seriously two years ago, after having listened to heavily equalized music through relatively crappy (decent for the cost) Senheisers for probably eight years up until that point. I didn't really like the sound of the Phonaks at first; I actually detested how "sterile" I thought they sounded, yet now I don't listen to anything lossless with any active EQ and only bother with something like BBE on specific MP3s. It wasn't simply me adjusting to these either as I've tested out quite a few of the $300 - $600 range headphones over the past two years as well. For extensive listening sessions I still prefer headphones, but these seemed to have been well worth the cost. I don't know how they compare to other similarly priced IEMs, nor how the more expensive ones sound, but these sound pretty good.
The only downside I feel they have is with the default tips that came with them. The "comply" foam seems to only fill out correctly with one of them, and only the largest of the silicone tips seems to be mostly sealing. I say mostly, because even with them being the largest, sometimes I have to push on them to get a good seal for bass, and I have no idea what I should be looking for in a different tip.
If you have the money, ACS do custom fitted silicone sleeves. http://www.acscustom.com/us/index.php?option=com_content&view=article&id=39&Itemid=90