I personally prefer ALBW to MM (ALBW is one of my favourite Zelda titles overall), but you need to decide for yourself what appeals more to you.
MM very much has the fanbase divided. There are those that proclaim it to be the very best Zelda game, an underappreciated gem, and those are generally the ones who really latch onto the story, since MM is probably the Zelda game that give NPCs that little extra, like letting them have a "life" of their own. While for those that don't get into all the individual stories the same way more view MM as a game with a few annoying mechanisms like temporary saves (has been fixed in the 3DS version) and having to turn back time over and over again and redo sections over and over again (if you didn't completely explore an area before turning back time).
ALBW is also seen in different ways, depending on where you come from. It seems to me that for people who love ALttP ALBW comes off as anything between an homage to the old classic to a knock-off, for people who don't have a previous relationship with ALttP ALBW seems to come off more often as the preferred game out of the two (like with me), and people are generally divided on loving it for allowing you to do dungeons in pretty much any order you may choose, or disliking it for having a seemingly "flat" difficulty/allowing you to get almost every item very early in the story.
So if you are a very story-driven gamer, then MM is probably going to appeal more to you
If you are a gamer who prefers a higher challenge in terms of difficulty, then MM is probably going to appeal more to you
If you prefer having more options on where to go and what to do, then ALBW is probably going to appeal more to you
If you're a gamer who likes to do things at your own pace, then ALBW is probably going to appeal more to you