Bs and Fs got their own advantage.

I chose floorstand cos i wanted more bass extention cos i like bass. Doesnt mean that bs dont have bass. Good bs have plenty of bass, question is enuf for you? If you listen a lot of heart hitting bass song, fs would suit you. If vocal, bs will do fine. Also fs needs to be played a bit louder for it to sound full and good compare to bs can do quite listening.

Regard the speakers you mention, have you go and try them yet? Im not sure about KEF but sonus is laid back type sound. This really comes down to your taste.

Monitor Audios are kinda bright for me.

6K budget, why dont try Dynaudio? Join meeeeee ^^

There is a B&W speaker going for around RM1+++. It's a BS. Look around. Tanny M4 is a FS, and is also around Rm1+++.
The B&W speaker is a bit boomy? Maybe it;s located too near the wall. I haven't heard B&W, so I can;t really comment about it, but I have heard ProAc, a Tablette 8 Reference 8 signature. It;s a BS. It has nice clarity, dynamic range, mild bass, bright. I can;t take bright, make me headache, so I pass on the speakers heheh.

Oh this is what I learn - if you have a small room, then you need not really match the speaker's requirement, except for the impedance. Like if the speakers say it need 20W to 100W, you can still use a SET 5wpc to drive it, unless your definition of small room is different....

Because speakers SPL, like it's <no spam links>/1m/1w, you can get quite a loud speaker at 1m within your room, or 2 m is no problem. I have found out that SET amp does not necessary need a very high SPL speaker to be able to drive it if your room is small.

Just my 2 cent. If I am wrong, someone please correct me
Thanks