Get the Razr, out of all the other phones I've owned (OG Droid, Inspire, Thunderbolt, Captivate & Triumph), this one by far is the best. I've always been a big fan of the X, except the physical buttons at the bottom which kept me from getting it...I always had wished they made a phone that looked exactly like the X but with capacitive buttons & they finally did. Plus like someone mentioned before this is 4G, X2 is not...even if you don't have 4G in your area you may soon enough. Another big turnoff was how the X lineup acted with Motoblur, did not like it. With the Razr I can't even tell it's there, it might as well be vanilla Android...Moto has hit a home run with this phone.
I highly recommend...oh & as another stated about getting the Nexus...unless you want a phone that feels plasticky/cheap go ahead...if you want superb build quality & ultra sleek design, pick Razr.
Good luck.