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

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i tried a bunch of mice in the last year and my favs have been vaxee np-01s ergo, pulsar jv-x and zowie ec3-dw and s2-dw. I didnt like the viper v3 pro or the da v3 pro. honestly its all about shape, you should get something like the zowie shape kit to figure out what works for you
The s2-dw has slightly different dimensions to the s2 and s2 Divina, and it’s quite noticeable imo if you’re used to using one of the regular s2
And your old faithful S2-DW is tiny bit improved version as well if you update the firmware so extra profit!
I use a Zowie S2-DW, I bought it for $85 off mousemarket, where the user claimed it was used less than 5 times. I believe him. For $85 I think it was well worth it. For $150 not so much. Personally, for the playstyle and games I play, 60-65gram mice are ideal. I've used mice in the 40 gram range and felt like it was hard to control but maybe it was also a shape problem. Nor has the whole polling rate thing ever mattered to me, infact I used an op1-8k for months and didn't play any better than my old S2-C. Battery life is a problem I guess but it takes less than 2 hours to full charge.
Yup zowie s2 dw i love mine
Those are mostly all a pretty similar XM2 shape, (not including the 2c) style which never worked with my hand. I would play well but would get pain around my pinky/ring finger due to the right sides shape/curve. If you are looking for a good mouse with a similar shape to the model O, but smaller & better quality I would recommend trying a Lamzu Maya (I have 2 Maya Xs and they are pretty awesome, the regular Maya is just a bit smaller!) My current mouse for relaxed claw is the Vaxee N01s Ergo and it might be (I think it is) the best mouse I've ever used. Notable mention to the zowie S2 DW, as that shape somehow rocks as well! (I only have the matte black. But the new glossy white looks cool!)
Idunno! They definitely have an enthusiast audience. So maybe they are more likely to share on the forums? The mice themselves are made with the expectation that they will be taken apart, which is pretty unique. But honestly I haven't looked up failure rates or warranty claims or anything. Purely basing off of being one of those people who buy a few mice each month and love taking them apart! I've owned the XM2we, OP1we and the XM2w (the 8k version) and all are just built different. Maybe Zowie has a good argument, as their triggers are (often) the same piece of plastic as the top shell. My S2 DW is genuinely a tank and has been knocked off my desk by my cats like 20x. They also have a unique scroll wheel housing and structure (I don't mind the sound, but some do). Also, the internal structure for Zowie mice is intense.... And the EC2 DW in particular uses like 7 types of screw sizes, which was infuriating, but I digress haha. Final answer is EGG and Zowie! Note: my current mains are the Ninjutso Ten air annnd the NP01S Ergo!
Have both the viper V3 and deathadder V4 and think both are great mice. But based on shape between these two I would recommend the V3, as the Dav4 is a much larger / non ambi mouse coming from the viper v2. If you prefer the larger shape the main negative I have for the V4 is that it has really loud/ping-y clicks. They feel good, but I don't like using this mouse without headphones tbh. Also, the motion sync settings... No issue here. I usually play with it on anyways. Outside of Razer, I've loved using the Zowie S2, and they have a 'flatter' shape similar the the Viper V2 in the FK-DW shape. Also the Lamzo Maya & Maya X are solid. My favorite mouse at the moment is the Vaxee NP01S Ergo, but unfortunately my scroll wheel just broke on that one!

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

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Teevolution - Terra

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Razer - Viper Ultimate

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ROCCAT (Turtle Beach) - Kone Pro

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Logitech G - G600 MMO Gaming Mouse

Ranked #1
Razer - Naga Trinity