When I listen to speakers or components that are described as "detailed". I usually find them to be "bright". I like a balanced response and if there is an emphasis, I prefer a little more mid-bass.
Perhaps it's just that the gear you've happened to hear WAS both detailed and bright. I have similar tastes in sonics -- I prefer more present upper bass/low mids to accentuated upper mids/highs. The buzz-words I watch for in reviews are "lively" and "energetic". Those often indicate a more tipped up, forward presentation. As others have said, detail in and of itself need not be fatiguing. As @kennyc states, we vary in our tolerances for brightness. I have little tolerance for brightness but that doesn't mean I like a dull top end. I want a cymbal to sound like a cymbal. The only sure-fire way to find out what pleases you is to listen to a variety of gear.