Should I graduate to floor standers or will larger bookshelves suffice?

@jonasandezekiel 

Yeah, the BMRs are low sensitivity, but then so are most stand-mount speakers in reality. Despite exaggerated specs that many manufacturers like to claim, it’s rare to encounter a medium size stand-mount speaker with a sensitivity over 86dB. 
 

I don’t see your amp mentioned in this thread, but if you have at least 150 WPC/4-ohm at your disposal, you should be fine with any of the BMR models.

And though stand-mounts generally image better (often not by much), they nearly always necessitate the need for a subwoofer, especially in a large room. That’s a whole other can of worms. I used to be a fan of stand-mount/subwoofer combos but finally concluded the small benefit in imaging doesn’t outweigh the hassle of sub integration. Seems no matter the speaker/sub combo, they never blend quite perfectly. I couldn’t even get them to blend right when using an active crossover designed specifically for that purpose. 
 

As for overall sound quality, you’d be hard pressed to find anything around $7K that remotely approaches the Philharmonics. Who else fits >$2K worth of drivers into $4300/pair speakers (HT Towers)? The HT Towers have a relatively slim baffle so they should image pretty well and take up approximately the same footprint as stand-mounts. 
https://philharmonicaudio.com/HT-Tower.html

I'll second the Legacy Calibre. I have the XD model and I bi amp them with a Rogue Cronus Magnum running the mids/highs and the powerful XD internal amps powering the bass.

They are like a floorstander in a big bookshelf package. The have an 8" woofer with two passive 8" radiators, a 7.5" midwoofer and a large AMT ribbon tweeter. Not many bookshelves can boast of that kind of firepower. The drivers are all substantial, high end components. 

Highly recommended. 

I am with celtic66...the ATC scm 40 is got one of the nicest mid drivers made...well controlled,No ported.Needs power?

Definitely like the Fritz Carreras BE, they’re awesome!  Give Fritz a call, he’s more than happy to speak with you.

As has been mentioned in a few different ways, to get the best performance out of a bookshelf speaker they really need to be on their dedicated stands. A slender floor standing speaker takes the same amount of space. But because the floor stander is optimizing cabinet volume (when properly designed) it has the ability to give greater bass extension. Others have suggested subwoofers to accompany a pair of bookshelf speakers. But now you're getting into the ideal of being able to properly blend the subwoofer with the smaller stand mounted speakers. If you are a careful listener you'll likely find (in most cases) the sonic discontinuities troubling. Why not go for the floor stander within that loudspeaker's series. One of the best slender floor standing speakers you'll ever encounter is the Vivid Audio Kaya K25. The bass is amazing and the sound is coherent, smooth, and 3D.