Tibor, can't help feeling that your requirements for a speaker will
be hard to find in budget models. Realistically, it's the 600? mark and
above where you'll find the qualities you want - think B&W CM
series, Canton 820, Elac, any Italian speaker or nearly, top range Kef,
Tannoy etc.
In other words, why not compromise and buy something
like the Tannoy F1s or the Q-acoustics 10xx models for the interim and
live with the limitations for a bit? You'll still be able to enjoy the
music after all.
Also, reviews vary in quality from one person's
thoughts based on nothing in particular to panel tests using extensive
criteria that try to deny the inherently subjective nature of any HiFi
review. In the end, they matter not a whit, it's your ears that count.
As has been said elsewhere, just head down to your local dealer and listen.