
Logitech G
G600 MMO Gaming Mouse
Customizable MMO workhorse, durable, but discontinued and pricey.

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Your best bet is probably Zowie EC1. They just released the DW version. My hands are 20.5 x 11.0 and for me the EC1 feels slightly too big.
Zowie ec1/2/3 the top
I have tried. A lot. I can play good and all but never as good and as confident as with large ergo mice. Like the deathadder, logitech 703, ec1a. I just feel I don't have as effective of a range of motion with symmetrical.
Zowie ec2/ec1 might just be what your looking for
Up until last week I would have said Zowie EC1, but I just got a Pulsar ZywOo and it took the comfort throne for me.
I just bought pulsar xlite v4 my first wireless mouse. Im so impressed and its so easy to use, easy to slide, gaming performance increased. I had zowie ec1. I play only dota 2.

Logitech G
G600 MMO Gaming Mouse
Customizable MMO workhorse, durable, but discontinued and pricey.

VXE
R1 Series
Budget king: lightweight, great value, long battery life.

Hitscan
Hyperlight
Ultra-light (39g) for small hands; sensor is outdated.

Razer
Viper V3 Pro
Adaptable shape, optical clicks, but scroll wheel malfunctions.

Logitech G
G502 HERO High Performance Gaming Mouse
Durable, heavy workhorse with free-spin scroll; prone to double-clicking.

Ranked #1
Hitscan - Hyperlight

Ranked #1
Teevolution - Terra

Ranked #1
Razer - Viper Ultimate

Ranked #1
ROCCAT (Turtle Beach) - Kone Pro

Ranked #1
Logitech G - G600 MMO Gaming Mouse

Ranked #1
Razer - Naga Trinity