Logitech Signature M650 L Full-size Wireless Scroll Mouse with Silent Clicks Blue 910-006232 - Best Buy
This Logitech-inspired mouse comes with a side scrolling wheel we'd definitely want to try - Yanko Design
Amazon.com: Logitech M545 Wireless Mouse – Side-to-Side Scroll Wheel and 2-Thumb Buttons Make Computer and Laptop Navigation Effortless, Ergonomic Shape for Right/Left Hand Use, USB Unifying Receiver, Black
It only costs $38 to give the Logitech G502 Hero's hyper-fast scroll wheel a spin | PC Gamer