Backlight DOES NOT means "Better keyboard". It means:
- Harder to modify and repair switches
- Ultra-low quality keycaps
- Non-standard modifiers, making it hard as hell to find keycap replacements (on most cases)
- ****ty stabilizers (on most cases)
While the Quickfire Ultimate "looks" nicer, the XT is far better on the "quality" department, due to its better components and better OEM (Costar).
If it were me, I'd get the XT without even looking back. Hell, none of my backlit keyboards even come close to how good typing on a non-backlit high quality keyboard such as the Das Keyboard Professional Silent (COSTAR Model) and surely the XT must be just as good or better.