Honestly that depends.
The Nokia 928 has these over the 8X:
Nokia Exclusive apps like Drive and City Lens
Clearback screen
Super Sensitive Screen
0.2" larger screen
Slightly larger better
32GB internal storage
Nokia Pureview Camera
Optical Image Stabilization
Will get more features with the GDR2 update, "Amber" for Lumias
Seems to have a handful more pixels
The AMOLED I suppose is up in the air, supposed to use less power.
Both have wireless charging (8X only on VZW for that feature)
Both have the same CPU and CPU
The HTC has Beats Audio and slightly higher PPI on the screen
Just have to weigh in if those are worth it, or save the upgrade for a better one in the future. The sales rep that sold me the 928 didn't know about the Super Sensitive screen or Clearback on the 928, he had the 8X, and seemed impressed with the phone compared to his.