The "right" console depends entirely on your priorities. Both are discontinued; buy used/refurbished.
Choose PlayStation 4 If You Want...
The Best Exclusives:God of War, Spider-Man, Horizon Zero Dawn, Bloodborne, Ghost of Tsushima, TLOU2, Uncharted 4. Widely regarded as the strongest lineup of the generation
PSVR: Only console VR option (headset required)
Larger Player Base: Easier matchmaking in cross-platform titles
DualShock 4 Ergonomics: Preferred by many for layout, gyro aiming, touchpad
Choose Xbox One (S / X) If You Want...
Game Pass Ultimate Value: $17/mo for 400+ games (day-one first-party, EA Play, PC Game Pass, Cloud Gaming). Best value in gaming
Backward Compatibility: Plays hundreds of Xbox 360 & original Xbox games, often with auto-HDR, FPS boost, resolution bumps (especially on One X / Series)
Best Hardware (One X): 6 TFLOPS GPU, 12 GB GDDR5, 4K Blu-ray drive. Most powerful last-gen console
Cross-Platform Ecosystem: Play Anywhere titles (buy once, own on Xbox & PC), shared saves, Xbox Cloud Gaming on phone/tablet
Quick Resume (Series only, but One has fast resume): Suspend/resume multiple games instantly
Decision Checklist
List 5 must-play games. Which console has more?
Do you own a gaming PC? (Game Pass PC + Xbox Play Anywhere reduces need for Xbox hardware)
Do you have a library of 360 discs? (Xbox One S/X reads them)
Budget: Used PS4 Slim ~$150, One S ~$130, One X ~$200
For pure single-player narrative games → PS4. For subscription value, BC, and PC integration → Xbox One X (or Series S new).