Flavio liked UM2's and SE530's equally. I'd myself give a slight edge to SE530.
To me, W3 is like when you are making a recipe and you add too much of one thing (say..salt) then you have to compensate with the other side (sugar). you go back and forth and you end up tasting a dish that isn't necessarily bad but is a little bit unbalanced on the pallete. Please...this is my own ears and personal assesment. While I really like W3 and if a gun were put to my head I would take it over SE530 (for the added treble detail), it seems bass and treble dominate the presentation and it fatigues my ears. I think I like a more boring, linear and neutral presentation with more midrange. I look forward to reviewing UM3X. For me..I think it will be magical...Yes...somewhat like SE530 but better...more velvety...more natural.