I disagree most strongly. Aside from the (not so minor) advantage that it uses Beaumont's new and cleaned-up edition of the score, I have been increasingly moved by it on repeated hearings both as a performance, and as a recording.
It has a lucidity and instrumental poetry which makes this music sound like Zemlinsky and no-one else (compare Chailly's sense of sub-Rachmaninov). We simply hear more significant orchestral detail than in rival versions. And, unlike the equally beautiful Conlon for EMI, Beaumont's new Chandos version also captures nearly all of Gielen's dramatic momentum on Arte Nova.
Some of this is down to intelligent casting. In his illuminating programme note Beaumont makes a very strong case indeed about the vocal requirements for the two singers: an older, experienced baritone and a young, pure soprano give exactly the contrast to facilitate the psychological turn-around in power between man and woman that Zemlinsky was exploring.
Franz Grundheber here may be a mite unsteady on his vocal pins, but his quarrying of the text is at least as deep as (and ultimately more moving than) Fischer-Dieskau. Turid Karlsen does not have the velvet allure of Soile Isokoski (Conlon) or the character of Soderstrom on an old BBC Carlton Classics CD (with Thomas Allen, also c. Gielen) but she does have the very qualities Beaumont was after to be an effective foil to Grundheber's tragic protagonist.
The complete 'Cymbeline' music (with a 'melodram' setting of 'Fear no more the heat o'the sun'

is an added attraction; so if it's depth and the most comprehensive realisation of Zemlinsky's vision you're after, the new Chandos is a viable first choice for repeated hearing.
Having said all of which, I'd concur that for newcomers the Arte Nova c. Gielen makes the most viscerally exciting first impression for this marvellous work; it's not bargain basement in any way.