Right now... yeah, I'm in a similar boat.
Xenoblade Chronicles, to my surprise, became my favorite game of all time, dethroning Ocarina of Time's long reign. The visuals, music, story, characters, gameplay, world... it all worked for me.
Xenoblade Chronicles X was an insta-buy and I gladly snatched up the Collector's edition. I heard it was a tad lighter on story, but it still looked great, the gameplay looked familiar, and the art direction was off the hook (sans weird character models).
... But... after 10 hours or so... I just don't love it.
The voice acting is servicable, but a big step back from the British voice cast (and the way they pronounce Nopon as "No-pon" instead of "Nah-pon" bugs me far more than it should). The cast thus far is exceedingly bland. The story I'm sure picks up, but after ten hours feels utterly aimless and directionless. The world is pretty but doesn't feel as cohesive as Xenoblade's was; it's pretty but far less engaging to traverse. The MMO quest system, one of Xenoblade's weaker elements, is even worse in XBX. Things that were simply and clean in the original, such as choosing party members, are no convoluted and time-consuming (you have to run around the city to pick who you want in your party at any given time). A lot of mechanics are poorly explained. The music alternates from pretty good to downright awful ("Unnngh.... yeah.... unghhh.... yeah..."). The lack of a strong central protagonist hurts (Elma isn't half-bad, but my main character feels so inessential).
Small quirk for me that is actually my pet peeve, but the camera seems outright broken in this game. No matter how many settings I adjust, the camera speed alternates from a snail's pace to whipping around like it's controlled by a drunk monkey. I have no idea why the camera doesn't rotate or turn at a consistent speed and I haven't been able to ever get it to track properly. It works just fine in Xenoblade Chronicles, but it's a mess in XBX to the point I feel like my copy is bugged.