You know, on the back of your Bryston is a couple of metal jumpers connecting the power and
the pre section of your integrated.
Remove that jumper and polish it with some sort of VERY FINE metal rubbing or polish.
Make it shine like crazy. Then clean it well with alcohol and then apply either Caig DeOxit or Quicksilver Gold or ProteX metal treatment.
Clean all the rca inputs with Caig DeOxit by the way.
Also clean the powercord inlet in the amp.
Why would you want to clean all these surfaces?
Well, a 16 year old amp is bound to have som buildup on the metal surfaces!!!
A good clean is good for the amp, and the sound!!!
Matching the Physics Yara... My guess would be the Epos speaker!!!
But also the DAli Lektor 3 would be good, it should be more warm in the sound, it is also easier to drive I think, that the Epos. But both these speakers do ha a slight peaky treble.
Also if the speaker cable you are using also is 16 years old, I'd suggest re-terminating it...
Cut the ends of the speaker cables, small stumps, to expose new unused surfaces.
Cleaning the speaker terminals on the amp is also a good idea!!
But the most important thing is to CLEAN that jumper and those rca's that connect the pre and power section!!
However... there is a old Dali goodie, it is called the Dali Grand Coupe.
Looks like this:

They do need a powerfull amp.
But I'm sure the bryston will kick them into life quite nicely.
They are ably to play just about all kinds of music.
They are only found on the used market now (around 1000$, and it's likely 10 years old..), but they are smashing!!
And they have a tunefull and adequatly resolved bass!
And if you REALLY want a Warm sound and an insanely easy to drive speaker...
The Pioneer HPM 40!!! I've seen them on sale for like 100$!!!
One might need to recone the woofers, but still...
Presence, warmth and punch and quite resolved also, very tunefull bass! Organic sound I'd say.
Lastly, the DM4's have a fuse inside... over the years one will get some arcing on that holder..
It might be a good idea to look inside and see if the metal surfaces are corroded in the fuseholder...
Imp.