Pretty random bunch...what about Fischer Audio DBA-02, RockIt sounds r-50?  What about TripleFi 10's?  I had a pair that I lost one ear of and ended up rebuying them.  They have pretty solid base and great highs. 

I haven't tested any of those 3 and was in a similar position as I was thinking about the SM3's.  But have you listened to the DBA-02's?  I have a pair of those which are highly detailed.  Bass isn't heavy but it's fairly crisp.  I've also been looking at the RockIt sounds R-50's (I have a pair...