Logitech G502 Hero Vs. Razer Basilisk V2
The G502 Hero by Logitech uses a Hero (proprietary) sensor, providing a DPI/CPI range of 100 - 16,000 DPI. This is combined with a 32-bit ARM processor. This results in a tracking speed of 400+ IPS. It uses a USB connection with a 2.1m Braided cable. It weighs in at 121 g without the cable, has 5 x 3.6g weights that can add up to 18g extra weight and is approximately 132 x 75 x 40 mm (LxWxH).
The Basilisk V2 by Razer uses an Optical sensor, specifically the Focus+, providing a DPI/CPI range of upto 20,000 DPI. This results in a tracking speed of 650 ips, and a maximum acceleration of 50 G. It uses a USB connection with a 2.1m Speedflex cable cable. It weighs in at 92 g without the cable and is approximately 130 x 60 x 42mm (LxWxH).