Most emulators pick a Spectrum and stick to it. ZenZX runs the whole family from a single binary, with a real, correctly-behaving ROM underneath each one — not one…
The ZX Spectrum +3 was the only Spectrum with a built-in floppy disk drive, and it's the model most emulators shortchange — disk support is fiddly to get right, so a lot…
ZenZX gives you three ways to load a tape, and lets you pick the right one for what you're doing — not a single fixed trade-off between speed and correctness.
Plenty of Spectrum software expects a joystick or a mouse, and ZenZX supports the real interfaces those programs were actually written for — not a generic "gamepad"…
ZenZX runs natively on macOS, Windows, and Linux, with the same GUI, the same feature set, and your choice of look on all three — no platform is the "real" version with…