These are drastically different mice both in shape and philosophy.
In the Zowie S2 you have a streamlined gaming mouse with no unnecessary frills, focus on shape and comfort and performance.
The G903 is the kitchen-sink of gaming mice, it has all the features with an infinite scroll wheel, tilt clicking, swappable buttons and wireless. The G903 really falls short on the shape, its not super comfortable, its long, narrow shape is going to feel awkward for anyone who doesn't have super long hands.
Size wise, these mice are in different categories, if you have really long hands the G903 might suit you better, otherwise the S2 is going to be a safer bet for average sized hands.
Both mice have flawless sensors, good buttons and good build quality.
|Mouse name||Logitech G903||Zowie S2|
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|Weight||110 grams||82 g|
4 Side buttons
3 Scroll clicks
|2 Primary Buttons|
1 Middle Scroll Button
1 DPI Button
2 Side buttons
|Sensor||Pixart PMW3366||Pixart PMW3360|
|Cable/Wireless||Wireless||Soft rubber cable|
|Battery Life||24 hours, 32 with LED off, wireless charging with Powerplay||N/A|
|Software||Logitech Gaming Software:|
RGB lighting settings
Saved profiles on the mouse
DPI settings are preprogrammed
Step 1: 400 DPI
Step 2: 800 DPI
Step 3: 1600 DPI
Step 4: 3200 DPI
|Warranty||2 year warranty||Unknown length|
|Pros||11 programmable buttons|
Swappable side buttons
|Safe shape, well balanced|
Improved lighter buttons
Flexible rubber cable
Plug and play
Good light weight at 82 grams
Shape is not the most comfortable
No housing for the USB dongle in the mouse
|Glossy coating picks up dirt|
Noisy scroll wheel