Omega are sold in the UK by Divine Audio (see
https://www.divineaudio.co.uk/brands...peaker-systems ), so no customs dramas. I have heard one of the stand mount designs (the Omega Compact Alnico Monitor IIRC) and it was one of those occasionally transcendental audio experiences - just lovely and a beautifully balanced sound but with that single driver musical coherence. As for whizzer cones, I suspect that it's a matter of the overall design, rather than their having any universal or detrimental sonic characteristics.
If you find yourself back in the UK, and knowing the sort of music that you enjoy, I would very much recommend hearing Omega speakers.