Just came back from another hifi store crawl. Got to hear the KEF (LS50 Meta, R3, Reference Meta, LS50WII, LSXII), Golder Ear BRX, Proac (Tablette 10, D2R), Rogers LS3/5A, ATC (SCM7, SCM19)
I heard the Proac Tablette 10 after hearing the KEFs and Golden Ear, the highs of the Tablette 10 does feel boosted, along with the bass. Kinda like the "rock" EQ setting. The treble of Rogers LS3/5A feels even stronger still. Among the tiny British monitors I would rank the perceived treble strength as follows:
Classic 4/5 < P3ESR-XD < SCM7 < Tablette 10 < Rogers LS3/5A
Even the Classic 4/5 does not sound dark or soft to me. If it is your idea of balanced, then the tablette 10 would sound boosted in treble. Personally I can stand all of them, depending on how long and loud I listen to them, and of course electronic pairing.
For me the Classic 4/5" falls into a category of sound that a lot of modern speaker falls into. A great all rounder with no particular weakness, warm but without any obvious colouration, smooth, dynamic, punchy, images well and detailed. Another speaker in my audition list that I personally lump in this category is the Dali Menuet SE. It's a bit cheaper, prettier, but ported. I can't comment on which is better because I heard them in different stores.
The Tablette 10 is veering into a category I call rock speakers. Like the above but with a bit cooler tone and a touch of V shaped curve. I would lump the Focal Aria 906 here as well. And may be the Golden Ear BRX as well, but this has a looser, smoother, warmer and less textured presentation.
There is also the Tablette 10 Signature. When I first listen to the Tablette 10 (after hearing the Menuet SE), it feels like a thinner/cooler/brighter presentation to me (it doesn't feel thin the second time I heard it). Right after that I heard the Tablette 10 Signature. What stood out to me was the tonality is quite different. Smoother, more delicate and romantic, less intense/fatiguing. As for the treble intensity, I didn't pay much attention to it, so it's possible they are about the same intensity, but feels like a gentler speaker to me. I have to hear it again to be sure.
You might also want to look into the ATC SCM7 too. It is like the Tablette 10 but with very linear bass. You may or may not like this because most speakers have a bass hump somewhere. It is 1/3 of the price of the Rogers LS3/5A, but I have to say it is the technically superior speaker, and actually sound like a monitor. Between it and the Tablette 10, I suspect I would pick the SCM7. The ATC tweeter also seemed superior. Notice I use words like "feel" and "seem", I heard them in different stores.
After hearing the LS3/5A for the second time, The flaws became more obvious to me. On the bottom end, it's simply inferior compared to modern speakers. The top end is definitely boosted. The midrange pops but not great on subtleties. The gold badge might be better. The imaging though, it's top notch and superior to all the Proacs, Or KEF's Uni-Q drivers. If I were to buy one, no way I am paying new Rogers price. I would go Falcon Gold badge DIY, which is a more reasonable price IMO.