Don't let the Droid RAZR MAXX and your past experience with it sway you from the Droid MAXX...they are two ENTIRELY different phones. I have the MAXX and absolutely LOVE it. I also had the RAZR MAXX, but believe me it wasn't even a close second to this phone. The Droid MAXX certainly learned a few "tricks" from the Droid RAZR MAXX, such as the Kevlar back (which is now not just the back but also sides and wraps up on the front at the bottom), the laminated internal design (layers of board, digitizer, screen battery and back sandwiched with double-sided tape to increase rigidity), and not the least of which is the giant battery. However it didn't stop there.
It's now a higher resolution screen, a larger display, Gorilla Glass 3, and the X8 Processor technology where it uses a combination of large dual-core processors and smaller dual and single core processors to both maximize speed and fluidity, while also minimizing battery consumption, and still better, enhancing the user experience by providing real screen content even while not being used with the Active Display feature. Another feature I really love is the ability to control it without ever even taking it out of my pocket - all by simple voice commands. It can send emails, texts, play music, route a trip with full navigation, answer a quick question about things such as weather and other basic topics, or do much more intensive web searches.
True, the Moto X can do most of the same things, but I prefer the larger screen, larger battery, Kevlar wrapped chassis, and really have no need for the customization that the X offers. As is often said, to each his own, but I'd give the MAXX a good look before making your final decision.