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. 
Ag insider logo xs@2xbfoura
@bfoura ...For absolutely best sound for the money, I have not heard anything superior to either my Krell Vangaurd Digital or Krell K 300i !  They synergize exceptionally well.  May offer up my Vangaurd soon for a very nice price!
The 803D2’s are an intriguing speaker that I purchased without a demo but had heard other B&W’s and took a flyer in them because I got a good deal and figured I could move them for same price if I didn’t like. Right now they are pretty close to sound as my Triton 1’s but in doing some research understand they like power. I was disappointed to learn that my McIntosh 152 is only 150 watts across all ohm taps. I have a Rowland 112 that I can get 275 watts tapped into 4 ohm. I’ll be trying that out today or tomorrow. On loan from my local Audio dealer I have a Rotel rb 1590, which is tops out at 350 watts per channel. So, it will be intersecting to hear the difference more juice makes with these speakers. 
This whole search for more detail brings me back to the importance amp selection  mentioned in this thread. I auditioned the 805 D’s through a Gryphon Diablo which is a 300 watt amp. So that, compared to all the other variables could be what makes the difference in the that quest for more detail, definition, soundstage, what ever you want to call it, especially with 800 series speakers. Seasoned audiophiles know this but a lot us on the learning curve may not fully appreciate the importance and think 150 watts should cover most applications.  My dealer also lent me a pair of Rocket 33 biwires to try as well and suspect that will help bring out the detail even more with these B&W’s. 
I had the 802D2’s...my Krell Vanguard Digital drove them extremely well...400w/ch @  4ohms.  I may have a buyer tonight for $2500.  It is mint and sweet...think fast.  Msrp was $5500 but actually went up a bit before K300i came out.  For $2500 it absolutely can not be beat, plus a world class DAC!!