Our honest recommendation
For a brand-new community in 2026, pick QBCore. The modular design (with ox_lib, ox_inventory, ox_target) is the way the FiveM ecosystem is moving, the docs are current, and the smaller RAM footprint means your starter tier holds 30%+ more concurrent players. The only reason to pick ESX in 2026 is if you already have ESX-locked Tebex scripts or your dev team only knows the old patterns.
Either way, you can change your mind. CoalHost hosts both side-by-side on the same panel, and migrating a server between frameworks is a one-evening job — reset world, install the other recipe, drag your resources back in. Daily backups (with MariaDB dump) make rollback safe if it doesn't work out.