@NewbieAudiophileExpert hold the line! It seems your amplifier is/has a bit bright top end (but luckily has loudness normalization bass/treble). How exactly you are/are not satisfied with those Warfadale flor standers? Unfortunately there are no measurements of them (or at least I didn't find them). Do you or have you ever used measurement mics in conjunction with EQ? I think that's where you need to put your efforts to (and it doesn't cost you much). I don't think any medium sized two way speakers (5.5~6.5") will be a noticable improvement to three way flor stand one's if Warfadale didn't done something very wrong. From those little rewievs there are on Amazon for those it seems actually cabinet for those is rather well made (didn't save on Isolation material nor glue them much) which usually is a main problem with cheap flor stand ones.
I am not a fan of the poli mica cones (which is subjective) at all and those use those as bass drivers.
I would discard both KEF's you mentioned; Q150 won't be able to go very loud, Q350 ol do had a good preference score and can go louder (still not very loud) has a two z-wings and it's still a bit bright and cetera...
This is a review and detailed measurements of the KEF Q350 Bookshelf/stand-mount speaker. It was purchased new by a member and kindly drop shipped to me for testing. The Q350 costs US $700 on Amazon including prime shipping. As with other KEF coaxial speakers, the look is unique and quite...
www.audiosciencereview.com
That would also discard Polk R200 even if you are willing to pay as much they cost as they are also a bit bright (bit bright and bit bright from both amp and speakers is bright).
I don't really know if your amp will be enough for DBR62 (you should try them if you can) which by the way can go very loud.
I also don't know if bottom end Q3030i can offer will be enough for you (and again they can go loud but not very, very loud).
That leads us to Reveal M16 (one way or another).
Anyway if I whose you I would start with getting a measurement mic, mesure what you are getting on listening spot and see what can be done (EQ and Equal loudness controls on the amp) with what you already have. And only then (and if you are not satisfied with what you can achieve with EQ) compare it with what you would get with any of mentioned ones based on calculated listening in room response (taking in consideration and position and angle you will be using them).
If you can not audition candidates (after you have done all mentioned) at least buy them from some places you can ship them back and get your money back if you don't like them (or simply it doesn't work out for you).
It sounds a bit complicated and probably is but I don't know a better way.
Best regards.