A single-device plan is intentionally narrow
If one computer contains your most important work and no other devices need protection, a one-device license can be the cleanest choice. It avoids paying for unused seats and is easy to manage.
Multi-device plans reduce gaps
Families often use a mix of laptops, desktops, tablets, and phones. A multi-device plan puts those devices under one subscription and makes renewals easier to track.
Compare cost per covered device
Do not compare plans only by their total price. Divide the price by the number of devices you will actually protect, then consider the included features. A plan with more seats is only better value when those seats will be used.
Leave room for the next device
If you are about to replace a computer or add another household device, check how the publisher handles transfers and device removal before you buy.