
Logitech G
G600 MMO Gaming Mouse
MMO button beast, but discontinued and double-click prone.

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Too bad it's so hard to get a hold of them, whish they had local retailers. I used to main the NP-01 wired, only managed to buy it 2nd hand in practically mint condition. I wanted to upgrade to the wireless version but ordering from their website gets way too expensive and not worth it, not to mention they closed their asia-pacific store.
NP-01, or 01s, not the ergo with the tilt hump unless that's what you want.
Last one I bought was a G403 that I had so many issues with (scroll wheel, cable being thick as hell, heavy, etc ). I mostly lost faith in Logitech gaming stuff. Bought a refurbished G903 which I occasionally use on the go, but I don't find it comfortable for longer gaming sessions. And recently bought an MX Master 3S for work (perfect). Rocking a Vaxee NP-01, and it's crazy good.
After 5 years down the rabbit hole I can't tell you that there even is a best mouse for FPS but I can tell you where I settled. For reference I have large hands (21 x 10.5). I have bought and used nearly 20 mice over the last 5 years. Main games are CS2 (20k elo), Valorant (immortal), The finals (diamond), Pub G and battlefield. The mouse that I have the most consistency with and best most natural feelings in hand is the zowie FK1+-C. Yes it's wired, yes it's all of 87grams, but it feels like I'm aiming with my eyes. I never worry about finger position or grip tension. It doesn't even enter into my mind. The viper V3 pro is similar but the front flair annoys me. To be clear I have performed very well on mice such as my deathadder V3 pro and vaxee np-01. I also play well on my zowie S1-C and zowie U2. The gpx was fine shape wise but the sensor skips occasionally (two separate copies). But as soon as I put my hands on the FK1+ I just knew. It's a sensation that can only be described as the absence of feeling. It just fits, I don't think about it. Is it perfect? Who knows... But it's more than good enough for me to be my best and enjoy the games I play at the level I play them at. I do wish there was a wireless version, but I'm ok with the wire for how well I perform with the mouse. Will it be perfect for you? Probably not... But I hope that you find a mouse that puts all others on eBay/market place like I have. Good luck.
I got the regular NP-01. Feels nothing like it unfortunately
If good clicks are very important, look no further than Vaxee. The NP-01s V2 or NP-01 Ergo would be right down your alley.
> Weight means very little in competitive gaming. Price doesn't matter if the product is right for you. It's funny, weight for me is more important in my competitive gaming career nowadays and it's hard for me to go back to anything over 50g. But you're right though, if product is right then price is no object. I went from Zowie to Vaxee to FM to finally settling on the Pulsar X2 CL. That's over $600 spent on just four mice (if we're talking specifics, I spent way more than that on more than four mice). I'm even willing to spend more if Zowie ever goes the Pulsar route and begin venturing onto lightweight mice. In fact, I'll buy them in a heartbeat despite being over $150. Same goes for Vaxee, they are both fantastic companies.

Logitech G
G600 MMO Gaming Mouse
MMO button beast, but discontinued and double-click prone.

VXE
Dragonfly R1 Pro
Lightweight value champ, but small with some QC issues.

Hitscan
Hyperlight
Ultra-light for small hands; 8K dongle sold separately.

Logitech G
G502 HERO High Performance Gaming Mouse
Durable, many buttons, adjustable weight; prone to double-clicks.

Razer
Viper V3 Pro
Lightweight, adaptable shape, high performance; scroll wheel issues.

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Teevolution - Terra

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Glorious - Model D Series

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Logitech G - G600 MMO Gaming Mouse

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Razer - Naga Trinity