Hi there
I'm pretty new here too but in my short time on head fi I've learnt that there's way more to iems than what's available in my local store.
As a suggestion, start with this thread if you haven't already,
http://www.head-fi.org/forum/thread/478568/multi-iem-review-162-iems-compared-kozee-infinity-x1-earsonics-sm2-added-04-16
particularly the 162 and counting review. Even if your 2 shortlisted iems aren't mentioned, it will give you a feel for how different iems' sound signatures, applications and practicalities can vary, and how spending more $ doesn't necessarily guarantee a better iem for your purposes. eg my current iems cost half what my previous ones cost and I way prefer them, all things considered.
I'm not familiar with Bose but I would guess they're are better alternatives for less money especially if their 'hi fi' is anything to go by (although their pro stuff had a good reputation way back). I owned Ety HF2's for a couple of years and they offered the best isolation i've experienced which was a priority to me (it isn't to everyone) but the deep insertion did become painful. Their sound sig was AFAIK typical Etymotic, very flat freq response but one that favoured 'airy' sparkling highs. Great, analytical hi end, but for me at the expense of the rest of the spectrum and eventually fatiguing.
I can't recommend poring over the above review enough before throwing down cash, and don't be afraid to make a few mistakes along the way. If you buy a well regarding iem and find its not for you, eBay or the For Sale section here will bite your hand off.