Help with high end bookshelf speakers

You Mentioned reflections. I like the idea of the Revel M126 with matching stands. They are really good with reflection due to the tweeter 5th gen wave guide, they have some very nice finishes, and they sound good with the Hegel series. 
Another option is the KEF R3 or R3 meta with a Nordost Heimdall speaker cable. It good for reflection, great for off axis, and it comes in nice finishes. 
last would be the Dali Minuet SE. it can be mounted on the wall, put on a shelf, or on a stand because it was designed to be within 8” off the wall do to the 45 degree angle port design. It only comes in burned walnut. It basically a Dali Micro KORE. I would use a speaker cable without silver. I would even try the $40 Micca speaker cables on Amazon. Yes I own/ use them on my second system. 
I know these are common brands but I have actually had experience with these combos. I hope his helped out today. 

I'm curious why I didn't get the usual suspects when I asked about a high-end bookshelf speaker i.e. Sonus Faber, Dynaudio & Revel. Makes me wonder...

Because for some reason, and despite being asked repeatedly by several others, you’re providing no info on budget, what speakers you’re using now, what specific improvements/sound characteristics you’re looking for, or if your looking for new or used.  Stop wondering and just share this basic and critical info and you’ll get much better and more specific/targeted recommendations here.  Sheesh.  Help us help you.

In the past I have enjoyed great sound from BW 805 d4 in a bookshelf set up. 

Full disclosure:  I also have a pair of Brand New - with warranty- of white BW 808d4 available here for $6500. This is below the price for an open box pair.

I'm a composer, pianist, and audiophile, and if you would like to seek great quality with great value, I recommend the following professional near field monitoring systems:

1.  More expensive, but great relative value for what you get (my current audio recording editing monitor system):  Genelec 8341A monitors (larger models are 8351 and 8361);  these can be -- but don't have to be -- combined with one or two related subwoofers (model 7350A or there are larger model options) -- I have two of these subwoofers that I purchased used.  I output my piano recordings from my MacBook Pro via USB through a MUTEC MC-3+ USB master clock/reclocker;  I've also purchased a new USB connection controller by Genelec for this system (model 9320A), but haven't received it yet.  All of the cabling is by DH Labs (silversonic.com), which was very reasonable.  What prompted me to investigate this system (including the MUTEC unit) were (a) Audio Science Review's Master Audio Review Index (these Genelec monitors were at the top of the rankings), and (b) a review on Sweetwater.com of the Genelec 8341A monitors, by an audiophile and pianist -- his comments were not only correct, but I went further and added the subwoofers, which substantially improved the system:  "Not a pro, just an audiophile; incredible sound for the price.  I'm not a sound engineer, just a software engineer and piano performance major with a long time love of audiophile systems that can reproduce natural, you-are-there sound. I bought these for my office workstation system, to provide "good enough" background playback of hi-rez streams from Qobuz and Tidal. I was flabbergasted to find that the 8341's driven by a bare bones Roon Macbook USB -> Mutec 3 front end could almost match the main listening system I've spent 15 years optimizing component by component at 20X the price point. Not to mention 10X the physical space requirement. FYI, I've tried plenty of 'bargain' hi-fi options as well over the years, from JBL to Paradigm to PSB to Focal and B&W mid level, so this isn't simply a case of a a stupid audiophile being unaware of what less expensive equipment with good base specs can do.  There is some material, such as 60's through 80's classic rock that I actually prefer on these over the main system."

2.  Much less expensive, but great (my prior audio editing monitors, which I still use for recreational listening):  Dynaudio BM6A MKII active monitors (which should be readily available used, or you could get the current model);  Dynaudio made (and perhaps continues to make) a subwoofer designed to supplement these.  

P.S.  I would also add, importantly, that having two source/headphone systems of similar total cost to the Genelec system, and after listening to vastly more expensive large systems, I think the best value audiophile solution -- if you want to optimize sound quality and listening alone -- are near-field monitors -- the audiophile sweet spot in driver size, in my opinion, because: (a) they minimize the room acoustic issues (since you sit close to them -- the drivers on my Genelec system are two feet from my ears) that are often costly major problems for large systems, while (b) providing large enough drivers to provide the physical acoustic bass/low mid-range that headphones can struggle to replicate because their drivers are necessarily small.  

Wow, this is kind of overwhelming, it all sounds great. 

@oldrooney seems to have similar room issues, think I'll try integrating a good sub in before I bail on the living room. I have a meager 5K budget so I need to appropriate the where the dollars go.

In the event I can get this room to play decently would digital room correction such as a mini-DSP have any value? Probably overthinking things again, just wondering.

Great input from all, thanks again.