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
@fatdaddy The 3.5’ wall angles up to 9’ and the tapers down to 8’ on the opposite wall. Th room is 13.5 wide and 26’ long. My listening position is about 20’ from the speakers. So, it’s not a traditional listen set up but what I have to work with for now. Whether I move on to other speakers or not, I’m going to bring someone in to help with room analysis and correction. From this post seems that’s going to help either way. I also agree with other opinions that the GE’s are not tuned to accentuate certain frequencies I’m seeking right now. I was fine with my GE’s but after hearing the B&W’s I felt like I’m missing something that I want from listening to music, so I’m going through a process to learn more. I wouldn’t say I’m looking for a speaker that provides for Uber-detail. However, I would like to hear music with a certain degree of instrument separation, as if you we’re listening live. I think a lot of us are looking for that. The question is what’s getting in the way of getting there. 
Pi*r^2
calculate 1, then 2, then subtract.
Now you have the volume of air moved. Of course there are myriad other factors from magnet efficiency to rigidity to.....
But if all you're asking about is diameter, there you go.
@bfoura,

As an owner of a pair of B&W 805d3's, I believe you are hearing the difference between your Golden Ear's and the 805's. I auditioned the 805d3's in the same room with the same front end electronics playing the same music against Golden Ears, Paradigms, MartinLogans, KEF, Dynaudios, and a few others. There was no contest in terms of detail, balance and presence.

I listen to the 805d3's continuously and have never felt any listening fatigue. I have, however, added a subwoofer since the 805d3's do need some help in the lower frequencies.
Bafra,

I can surmise from your comments that you are an intelligent fellow
who is not to be swayed by some of the comments above.
Floorstanders-yes. Standmounts-not for primary system REGARDLESS
of room size. Now that may ignite a sh-t-storm of replies. 
Never listened to B&W. Actually I go out of my way to avoid listening
to anything with an aesthetic I do not want to look at. Just me.
Breaking news. The owner of the 805’s I listened to is going to let me demo them at my house for a few days. Can’t get them till Sunday. That will answer a lot of questions about whether it’s my room, the speakers or maybe both. @chorus I hear what you’re saying about floor and stand mounts. His stand mounts sounded good in his room but do have concerns if stand mounts can hang in my space and told the owner as so much to manage expectations. Not too enthused about adding a sub. So, while it’s obvious I’m intrigued by the 805 sound, I’m also open to other options that make sense. Before the GE’s a had a pair of Cornwall’s I really enjoyed but wanted to try a “modern” speaker. A local audio store will let me demo the Forte III’s and those are in my price range. It’s been a while since I had horn speakers and can’t recall if they have the detail I’m seeking.