The thing with G-Sync is that every gamer in Battlefield 4 forums said that they use their monitors without G-Sync when gaming at 144hz, i asked them why and they all replied that it`s a pointless tech at that fps speed.. so practically you pay for G-sync only on the slower games where you can`t reach to fast fps.
No. If you don't "pay for G-Sync", you don't get ULMB.
G-Sync - Gives you G-Sync functionality and the nVidia provided hardware module to provide ULMB
Freesync - Gives you Free-Sync functionality and no hardware module* to provide ULMB
* Some monitor manufacturers do provide Motion Blur Reduction Technology via a hardware module on their Freesyc monitors but quality and capabilities vary from manufacturer to manufacturer. AMD's response to G-Sync, was to provide a cheaper alternative to G-Sync and they did so be leaving out the MBR technology which provided ULMB.
Also "when gaming at 144 Hz". is misleading. When using a 144 Hz monitor you are not "gaming at 144 Hz, you are gaming at the fps that you card(s) are capable of providing. Playing BF4 at 2560 x 1440 with a 980 Ti, "you are gaming" at about 75 fps.... about 60 fps w/ GTAV ... 42 in Witcher 3 ... 102 fps in BF3
G-Sync would be the best choice for GTAV (60 fps) and Witcher 3 (42 fps) as G-Sync's strength is from 30 - 60 fps
For BF4 you are at the upper range (75 fps) where G-Sync shows noticeable improvement, but ULMB at this point and up will usually provide a better experience. With BF3 (100+ fps) however ULMB setting should deliver the best experience. For more on the subject, see the review below.
http://www.tftcentral.co.uk/reviews/acer_predator_z35.htm
One large factor being ignored here about why "this monitor" is that with 144 Hz panels, it makes IPS / AMVA work for gaming. You just don't see manufacturers investing in this panel technology to any extent at 144 hz and 1080p. Until the Acer Predator (XB270HU) came along, I could never recommend IPS for gaming. However with the lag on these fast panels now reduced to well within the acceptable gaming range, there's no denying the improved image quality. The cost of the panel combined with the speed just pushes the cost up to a level that would be a hard sell at 1080p. Without the lag stigma at 144 Hz, AMVA / IPS panels are the now "desired" panel types as gamers can now enjoy the better image quality. With flat 1440p panels hovering between $700 and $800, for someone looking for a new experience the price jump is not that insurmountable. Let's remember, your not even looking at this category unless you have already spent $600 or more just on GFX card(s).
What I am seeing is that the
"I'm still in high school / college w/ a part time job" builds are still TN 144 Hz but the
"I'm outta college, got my 1st job, 'soon will have my own place' guys" are buying IPS.. most fall into the twin 970s @ 2560 x 1440 to twin 980 Tis w/ 3400 x 1440 980 range.