I can’t comment on the others, (and you might be lucky to find someone who has ridden them all) but I can tell you that my best mate recently got a Caldera and loves it. Nice spec, good angles, its been all over our local trails in the chilterns, Afan, peaks and handled it all with aplomb, strong too, he’s not averse to hitting the deck.
Maybe post some links if in depth comments on spec is what you’re after.
Hope thats of some help