Probably should add a little more info on what you are looking for: budget, use case, sound signature preference, etc.
Lots of great IEMs out there with sound quality much better than Bose. Wearing them over ear is preferred for me (a lot more comfortable). The Shure/Westone IEM shape works for a lot of people and most of the IEMs dropped here can be worn over the ear vs the cable down
You can always start with budget fi IEMs and work your way up. Something like the Nuforce EDC. I will say that having removable cables is very very nice, since cables are usually the first to go bad. I'd hate to have to throw away a good pair of IEMs just because of a bad cable, but it happens.