Looking for the an ultrawide that meets these criteria

[Neon01]

Must haves: G-sync (officially or unofficially, as long as it really supports VRR, and the broader the range, the better)
100hz minimum refresh rate
3440x1440 minimum res
<$650

I prefer monitors that appear to have smooth textures and do not appear "dirty" or sparkly. My main setup at home (this is for our vacation home) features an IPS Acer I really like (in sig), but it's too expensive for me to consider here, and I'm looking for something with a higher refresh rate (it's max 75hz).

After reading lots and lots of reviews, I can't seem to find a single monitor that does pretty much everything well for under maybe $1k, but the closest I've found is the Alienware https://www.amazon.com/Dell-Alienwa...ware+3418&qid=1576768979&s=electronics&sr=1-1 which is on sale for $650 at Microcenter.

Then again, I'm not sure if it's worth the price difference over something like this

https://www.microcenter.com/product...vi-hdmi-dp-freesync-curved-led-gaming-monitor

which is almost $300 cheaper, as you can see.

For reference, the room this will be located in has no windows, so it' never that bright. Any suggestions are welcome.