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

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I went back to use my old deathadder 3.5g and the shape is perfect for my palm grip, I wanted something wireless with that shape so I went for the deathadder v3 pro the shape is close enough to feel confortable
https://www.pcgamer.com/the-best-left-handed-mouse-for-gaming-for-2019/ alright, I was thinking about the left hand edition of the deathadder, but apparently that was a few generations ago haha; shows how old I am
At least the previous version of the viper was truly ambidextrous... I felt really disappointed when I saw that the newest version had thumb buttons only on the left side. The new Cobra family is the same, only for right handed. Deathadder had a left handed version (wired) years ago, now it's only right handed. The only true left handed option is the Naga wired, which is an objectively inferior version compared to the right handed ones.
don't buy razer, had the basilisk v2 and it doesn't last a year. Before that i have a 3500g deathadder wich serve me well for 10 years, never razer again. since that i have been using a g305, so good so far.
After some advice about computer mice you can use in the left hand. I used to have the Razor Death Adder when it was available, but they discontinued it. I struck lucky with a cheap ambidextrous mouse, but that has given up the ghost, I bought what was advertised as an ambidextrous mouse, but while it has the buttons on both sides, it doesn't feel even in the hand (it is far more comfortable in the right than the left so no good for me), and an hour of use and my wrist is aching. The buttons and scroll wheel are also incredibly clunky when used. So looks like that is going to be consigned to the spare. I do game but not competitively and mostly older games. I prefer a wired mouse as batteries have a horrible habit of going at the most inconvenient time I only want a couple of thumb buttons on the right hand side so the Razor Naga is out. I really don't want to spend a fortune £100 is about my maximum unless one come highly recommended. I did find Corsair M75 Wired RGB Lightweight FPS Gaming Mouse – 26,000 DPI – Swappable Side Buttons – PC – Black for £50 on Amazon, and wondered if anyone had tried it and what they thought of it
UPDATE After some more digging, and deciding I wasn't sure if I wanted to spend £50 on a mouse I wasn't sure I'd like, I realised that three quarters of the mice I'd had had all be Logitech, so I checked those out. I've ended up with a Logitech G PRO 2 LIGHTSPEED Wireless, Right- or Left-Handed Mouse with up to 4 Customisable and Switchable Magnetic Side Buttons, 44K DPI Sensor, USB-C Charging, for PC/Mac - Black At £90 it was the top end of my price range, and it is wireless, but it feels wonderful in my hand. It has the advantage that it comes with spare plates and buttons so you can change the side buttons to make it a truly left handed mouse. If you can cope with buttons on both sides you could have all four as programmable (I think). I used to have one that had the four buttons and every so often my ring finger would catch one I didn't want it to, so a flat plat on that side is a big improvement. If you are looking for a left handed mouse, it is well worth considering.
Long time (circa 2011) Razer DeathAdder Left-handed edition owner here. Love it, but it's near its final days. Looking for another ergo left handed that doesn't cost me 150/200 EUR... hard times.

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