Buy the Acer KB272 G0bi.

It gives you frame rates your GPU can actually hit, from a brand that's still around to back it up, for two thirds the price.

What was compared

Acer 27in FHD 1920x1080 IPS 120Hz Gaming Monitor | Office KB272 G0bi | 1ms, AdaptiveSync, ... — $99.99
Viewedge 27 inch 4K 160Hz Computer Monitor 1ms UHD 2160p IPS Gaming Monitor | HDR 10, 100%... — $169.99

1. Smooth motion you'll actually see
Acer's 1080p 120Hz runs smooth on almost any GPU from the last five years. Viewedge's 4K 160Hz needs a high-end card just to hit those numbers, so most budget buyers never see the frame rate they paid for.
2. Nearly 70 dollars back in your pocket
Acer costs $99.99 against Viewedge's $169.99, a big premium for a panel that needs pricier hardware to shine. For the same desk and the same games, Acer gets you there for less and leaves cash for a better GPU later.
3. A name that's been reliable for years
Acer's monitor lineup has a track record of solid builds, and owner reviews here don't flag any build quality issues after months of use. Viewedge is a newer budget brand people are still asking is this legit? on forums.
4. Yes, 4K sounds better. It mostly isn't at 27 inches.
4K on a 27 inch screen is a subtle jump over 1080p at normal desk distance, and reviewers already call 27 inch 4K disappointing up close. Unless you own a top-tier GPU and sit close to the screen, that resolution is money spent on detail you'll never notice, and that's not most buyers.
5. One you can actually buy with confidence
Viewedge shows no featured offers available on its own listing, a real red flag for stock and seller reliability. Acer is in stock, ships from Amazon directly, and carries a support history a $170 unknown brand can't match.