Which monitor speakers are the most detailed...

Both Harbeths mentioned above are great. The Compact 7 has the the unusual midrange clarity/detail the result of the material used to make the 8 inch mid-woofer. Smaller than the Harbeth Compact 7, but bigger than a mini-monitor and still using the same mid-woofer, and still in your under $3000 price range, is the Harbeth Monitor 30, the primary mid-field monitor used now by the BBC. (The much larger Monitor 40 is the large reference speaker used by the BBC and the Monitor 20 - which is the same speaker as the HLP3ES - is their near field monitor. I doubt there are any Monitor 30's available in the US, but you could contact the distributor.

I second the Taylo Reference monitors. About $1400-1500 used with stands on A'gon or from Tyler Acoustics directly.

In my opinion for $1000 the AV Reality Avinci Ones "take the cake". (Go to their website to read my glowing review). The best part about AV Reality is their price. For what they cost, they cannot be beat. Truly a state of the art designs with top of the line drivers.

Something else to note: AV Reality is making an even better speaker called the Avinci "Studio", which is a knock off of the $9500 Krell Lat monitor, for $2000! From a driver and crossover implementation perspective, the AV Reality Studio ABSOLUTELY crushes the ACI, Merlin, Totem and Dynaudio speakers that you mentioned.

In comparison to any other speaker manufacturer that I know of, AV Reality's Avinci speaker line offers audiophiles an unprecedented value in ultra high end speakers, using only the best drivers and crossovers. Have I said enough?

Who is the U.S. distributor for Harbeth? Thanks.

I agree with you Shanej in what you've mentioned in particular:
Totem Tabu or if you find for >3k Totem Mani and don't forget about the stands.
They can through some flor-standing deep and tight bass with uniquely defined mids and musical highs.