The SteelSeries Rival 3 punches well above its price bracket. The TrueMove Core optical sensor delivers 8,500 DPI tracking that you'd expect from mice costing twice as much, making it a genuine steal for budget-conscious gamers.
At just 77g it's one of the lightest mice in its class, and the ambidextrous shape makes it suitable for both left and right handed players — a rarity at this price point.
The Rival 3 is the best mouse under £20 full stop. Lightweight, accurate and ambidextrous — hard to beat at this price.