Celestion - in my opinion obviously - made a very consistent series of speakers over the years. Mordaunt Short also had a couple of stars (the 30.1 [and smaller 20.1] for sale here a week or so ago are cases in point), especially the ones with Robin Marshall's input, Speaking of Robin, his own Epos ES11 could sound refined and civilised and I'd love to hear them again on more modern gear, since in my day the ES14 (which does have a sssssparkle in its final form) took all the interest in dealerships such as mine.
I think Wharfedale did some great things too, but may have gone from lively and fresh sounding (505's) on the one hand to either bland/boring or restrained (depending on viewpoint) with the *08 series. The move to Chinese manufacturing and the subsequent floorstanders are too late for me and I don't know how some of these models sound - the Diamond series are, by and large, sublime and now very cheap miniatures on the used market I think.
Lastly, I can't comment with overmuch enthusiasm for much of B&W's output I'm afraid. This form specialises in an upper mid recession (oooh missus
) followed by a treble which either bites your head off, or sparkles pleasantly (on the dearer ones). The original M805 was a goodie though and apparently the black ones were the most "accurate" and the walnut ones slightly warmer in balance for the domestic market. They MUST be presented on high stands though, with the tweeter set above you. later 805's in the curvy boxes may look better, but the crossover simplification may not always be a good thing I believe.