There's nothing wrong with the XL2730Z V002, provided it doesn't just randomly die on you (people with both ROG Swifts PG278Q's and XL2730Z's have had the panels just quit working randomly, usually starting with very bad blurring or corruption--the panels are extremely similar although the part numbers differ).
The image quality of the XL2730z should blow away the XL2720Z or most other TN panels away (it's still a TN but the ROG Swift is identical in image quality). However blur reduction is VERY Important to me, and the XL2730Z does (1) NOT respond to vertical total tweaks to lower the strobe crosstalk even though it recognizes that the VT was changed,viewtopic.php?f=13&t=2222&start=20
(at 120hz, crosstalk covers around 20% of the screen, although you can move it around with the strobe phase (AREA) OSD setting, while on the XL2720Z, you can lower strobe crosstalk at most refresh rates (60hz-128hz in 1 hz increments mostly) by 13-25% by either using a VT 1350, VT 1354, VT 1360, or VT 1497-1502 custom vertical total (whichever one does not cause frameskipping or go out of range). and
(2) --the biggie--the XL2730Z can not strobe in sync with the refresh rate under 120hz, which is a deal breaker for me. But for many people they just use freesync anyway. But I need my custom refresh rates and my full range blur reduction.
For anyone who doesn't, however, the xl2730Z is a good purchase.
Some people who are tired of playing the XB270HU / PB279Q panel lottery are trying the XL2730Z Even though they have an Nvidia card (=no free sync) and are still happy.