Decisions on standmounts: ATC, Dynaudio, ProAc, Sonus Faber

I’m considering the following speakers models:
Dynaudio Contour S1.4
ProAc Tablette 10 Signature
Sonus Faber Sonetto II

Currently I’m listening to a pair of Wharfedale Denton 80th Anniversarry, everything so musical and well done with this speakers, it sound sweet smooth engaging if powerd by a Class D Audio SDS-470C with upgraded power supply, it sound near to neutral with very accurate dimensional Hi-Fi details if powerd by an NAD M22 v2 power amp. Having said that, I would like to have another set of speakers to play with, most probably I would something that sound balanced from top to bottom, while not too clinical analytical or too lush warm sounding to begin with. For critical listening, usually I’m using the Sennheiser HD 600, source signal from Fostex HP-A3 DAC/preamp. I will save a FLAC file if i like/love a track, then I will also convert it to mp3 vbr0 as another copy for car playback.

@jaybe I'll try it someday, I'm curious what amp you use to drive the ATC SCM19? Is it V2 with the latest new ATC tweeters?
I have been listened enough with the Sonus Faber Sonetto I, hmm I think the sound is neutral and flat across the spectrum, kinda lack coloration for some poorer recordings, which can be higher noise to my ears. I would plan on to attempt Spendor Classic 3/1 next, which from begin should be my first try before anything else in the market, how could I miss it? Anybody has faith in Spendor Classic line? The price of the bookshelf just roughly same or maybe even cheaper than Sonetto II I believe, and it's made in England, with some LS 3/5a brilliant magic?
I heard the Classic 100 last year, and thought it really really good. Very dynamic and yet very listenable.
@twoleftears Spendor Classic 100 of course would an ideal end game choice for pure music HiFi listening speakers, reality is out of my budge a lot haha, the bookshelf Classic 3/1 I would assume is big enough for me.