@lak I took a look at your speakers via the link you posted. I personally don’t have any experience with them.
However, based on the design, I would say that @sbayne ’s take is very much on point.
The special attention to the bass drivers, setup, front/bottom(?) porting, cabinet design would lead me to theoretically predict better bass from the EPX. How much better?????
The real differential is going to come down to the upper half of the two speakers. The mids/tweeters will likely be the deciding factor. As others have already pointed out...it’s going to come down to what you prefer and like.
The $3300 in and ~ $300 out for a 60 day shoot-out in your audio corral is a bl**dy fantastic deal, in my opinion. Hope you give it a go and let us know your outcomes. All the best.