I'm so terribly sorry, but it's my experience that the terms 'audiophile' and 'neutral sound' just DON't go together
I'm not able to give definitive recommendations here, but you won't go wrong with KEF and maybe the Wharfedales these days (assuming Peter Comeau was involved in the design of the latter). I did hear a pair of floor standing Choras a few years back and liked the sound, although the 'leaning back' look put me off! No idea if revel can still be got in Europe (dealer apathy has all but removed them from UK shores I think). I recall that Dynaudio's basic range of floor-standers didn't sound as 'intense Hifi' as their top models can and do, and I feel they're all the better for it.
Good luck. EU prices and US pricing can differ due to shipping and distributor profits, so you will find some variation in recommendations here.
No idea if you can get a listen, but the range of Russell K speakers may be worth consideration if available to you. I doubt any of them have ever seen anything remotely like a Klippel, but the few I've heard always 'sounded' well integrated and definitely not a 'showy' tone as B&Ws and PMCs can be.
P.S. Accurate bass performance in a 'tower' speaker *may* be asking a lot, as I was told by a speaker designer that floor standing 'tower types' can all too easily have an 'organ pipe' resonance at 60Hz or so which can prove difficult to tame. maybe multiple bass drivers situated at different points in the enclosure can break it up maybe (I'm clutching at straws). I also remain deeply suspicious of small speakers extending bass through dsp or other means to 50Hz or so...