Choosing between the PlayStation Portal and the Backbone One depends on your specific needs and preferences. If you prioritize portability and want a compact controller for gaming on your mobile phone, the Backbone One is a cost-effective and popular option. It offers compatibility with both the PS Remote Play app and mobile games, making it a versatile choice above its competitors, such as the Razer Kishi.
On the other hand, if you value a larger screen, enhanced features like adaptive triggers and haptic feedback, and a more immersive gaming experience overall, the PlayStation Portal is worth considering. It offers an all-in-one solution for streaming games from your PlayStation console, providing a seamless transition from console to handheld gaming. It arguably lacks the charm of Sony's PS Vita, and doesn't have the additional use cases of the Steam Deck or Legion Go as portable gaming PCs. However, the familiar form factor of the DualSense controller, combined with a superior screen size, display, and battery life, marks the PS Portal as a compelling PS5 accessory.