As much as I love Moxfield (I just discovered it), there is one thing about Deckbox.org (which I currently use) that will keep me on Deckbox. All my decks are listed on the left side of the user interface. I can click a deck in the list and the gallery changes to that deck. With Moxfield, I have to click multitple times, and leave the current page, to get to a different deck. If my deck folders were right under the left image in Moxfield, allowing me to quickly change from one deck to another, without leaving the page and clicking two or three times, then I’d use Moxfield exclusively.