you really should set a budget because this will help guide users to giving you a reasonable suggestion, however...
top universals for overall clarity, definition and detail would probably be: shure se535, westone 4, sony mdr-ex1000, sennheiser IE80, etymotic er4-
i cant say ive heard the IE80 however i have heard the IE8 and upon purchasing the EX1000 it was clear the IE8 wasnt portraying nearly as much detail or clarity. IE80 is said to right the IE8's wrongs tho. in regards to all of the above it really is not a question of what gives better detail or clarity because they all boast excellent definition, it really comes down to what kind of signature you are after as most high end earphones sound excellent just different.
the shures will boast excellent details in the midrange with a full forceful bass and highs that sound lush yet maybe not extending as far still as one may want.
the westone's again will portray brilliant detail across the range if falling a little short of perfection in the midrange, a tad hollow. bass is heavy and overwhelming at times but its a taste preference thing.
the sony's are some of the nicest yet laid back phones ive heard, mids are smooth yet beautifully detailed, highs are at times very sharp yet detailing and clarity is at its best here, the bass for me is nigh on perfect, it manages to cater for the song playing, if the song has heavy bass these will deliver but when the song is not made with bass in mind its terrifically laid back and smooth.
the etymotics are the daddy of detail and clarity but being a single balanced armature of the not forgotten past it truely shows how limited armature frequency ranges can be, portraying very little bass impact, still epic in its clarity and accuracy. been around a long time and is certainly something to compare the rest of the market to in terms of accuracy and detail.
hope that helps.