Looking for more detail in a speaker


Kind of a long first post but needed the space to set up my situation. 
I decided to do something about my speaker situation after demoing a pair of B&W 805d’s. One of the tracks played was Sympathy for the Devil. At the beginning of the song, a percussion instrument, either a guiro or cabasa, just popped out at me on the left speaker. I’ve heard that song a million times but never noticed that percussion instrument coming at me like that. I came home and played the track through my system, through my streamer and turntable. My speakers are Golden Ear Triton One’s. That same presentation just isn’t there like with those 805’s.
The GET1’s are certainly decent speakers; are they not designed for this type of detailed presentation? Is it my room? My listening room is a odd shaped man attic with a 3.5’ wall on one side with an 8’ wall on the other side peaking a 9’ in the middle. My listening position is about 17’ from the speakers.  I’m sure the room is acoustically challenged. Also, I have a long speaker wire run, like 40’. Does that contribute to the lack of detail? I figured out a way to trim about 15’ of speaker wire length from each run and plan to do that ASAP. I’m using AudioQuest construction rated wire. I believe they’re 14 gauge.
So, why not buy the 805’s? I’ve thought seriously about them but concerned they’ll be kind of small for my room. Seems like I need floor standers. I’d like to keep any replacement speakers at $4k. I have an opportunity to pick up a pair of Dynaudio S5.4s for $4k but haven’t made a move in them yet. 
Any suggestions on a speaker selection or adjustments to my room or speaker wire are appreciated. To sum it up, I’m looking for more instrument detail with good sound staging either by making tweaks to my current set up or getting another flavor of speakers. Thx. 
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bfoura

the B&W 805 is a very fine speaker. The (D) tweeter really stepped up presentation and sound. Best of all, this monitor sounds great with solid-state or tubed gear. 

Happy Listening!
Not knowing from your description if the 805 audition was using your same Mac streaming as a source, but if not, the DAC used in the audition was likely a large contributing factor to the pronounced percussion on SFTD.  You have a 3.5' wall?  If the attic room is that small, a system with stand-mounted speakers, augmented with subwoofer(s) if needed would give you more placement options than large floor-standers.  Get a good DAC between your Mac and amplification.  This will make more difference than doing a lot of speaker swapping.
The comments on the Triton are spot and make sense. The venerable designer Sandy Gross founded Def Tech and it was the same there - emphasis on deep bass in tower speakers at the expense of the rest of the curve - high volume, dig low, hit hard was the mantra. I demoed the $10k Reference recently and walked away thinking great for home theater just like my previous BP7000’S (and the BP3000 if anyone remembers those beasts) -

The most detailed speakers I ever demoed were Wilsons but unless you want a used ~15 year old model, they are Uber expensive but hold their value better than most given the older models’ cult like status.
I just listen to this Rolling Stone song ...

And i perceive clearly at the left this drumming hand sounds...

The problem is probably not your speakers that seems good one but the acoustical control of the room....

I know that for a fact because there is NO relation between my speakers S.Q. before and after i have work the acoustical embedding with passive materials but mainly with active device control....Absolutely no relation....

The choice of speakers, if they are relatively good one to begin with, is LESS impactful than the rightfully acoustical embedding, and also of the mechanical and electrical embeddings.... Alas! most dont know that.....Dont upgrade your component but think about acoustical treatment and control....

For most the only way to live an audiophile S.Q. is throwing a lot of money in upgrade, this is a myth, and an half truth....Taking care of vibration/ resonance, of the noise floor of the house and of the acoustical dimensions are the true keys....

My best to you.....
I too am unimpressed with GE Triton Ones, having worked at a dealership for several years. At that store, Paradigm was my go-to.  Now I will mention the Revel F208, a big beefy floorstander with great detail, clarity, low end sock, and a reasonable price. Give them a listen, and ditto the advice on room treatment and positioning.