I don't know if destroy is the right adjective to use here, but there will definitely be a noticeable overall improvement in image quality with most material being viewed. If you're interested with 3D or plan to watch a lot of it, I'd choose the Sony HW50ES over the JVC. Either way, either of those options will be a very nice upgrade over your current projector.
if you're a fan of deep blacks and good contrast like i am, yes.
if you're used to watching tv on cheap LCD's that barely produce dark grey and you're more concerned with motion, brightness, or some other aspect i find far less important, then yeah, destroy might be too much.
i still say the competition for the x35 is the 50ES and 5020ub though, not the models he posted.