Yea only the simple looking gaming mouse seem to work the best with a few exceptions like the Ikari but from what I know any of the cheap dell mouse are more than enough for simple stuff like that. I currently have a sidewinder x3 that I paid 15$ for and soon getting a Zowie am which so far is the only "gaming" mouse worth getting other than the standard xai or deathadder.
By the way if you want a replacement for the g9x the cm storm spawn has somewhat of the same shape.
Thanks, and yeah, considered the Spawn too. Should have a great optical sensor (Avago 3090), has Omron switches, problem being the 142 grams of weight. It's probably not a problem if you slap enough teflon at the bottom and especially if you're clawing to begin with but I can generally feel even small differences in weight among various mice and G9X's weight even without the weights was way too much (in turn, lighter mice can kill your hands too if they're small and you need to bend your fingers at uncomfortable angles). On the other hand, G9X without any grip at all turns into some sort of high-DPI laser Kinzu (only a bit narrow). It is usable (and for a big bonus, you can finally forget about side buttons getting in the way of your fingers) but I haven't played a serious game like that yet. It might be kinda logical to get another G9X since I already have the custom ID grip I've spent some money on, plus I could expirement with the other grips like stick some teflon on the rim and some grip-assisting rubber stickers on top. But I'm not sure really if I want to go there again. Might be a good idea to try something new.
That one Zowie AM has 2300 dpi and that's close to ideal for me with a larger optical mouse. Somewhat worried that the 3090 sensor (same as in the Spawn) is generally more of a native 1800/3600 dpi sensor, while the 2300 seems to result from Zowie's experimenting with the lens. Not as bad as interpolation but I wouldn't be too enthusiastic, I think. On the other hand, the other available resolutions are 450 and 1150 and I guess they wouldn't run a serious gaming mouse on three non-native resolutions, so whatever they do with the lens must be pretty much solid stuff. Also looked at Mico but not sure about that one. 1600 DPI isn't much but with a smaller mouse it's better than with a big one, even 1200 would be manageable with something so small. I like the small size and weight and absence of side buttons but 58 mm width is steep (IMHO 80 mm would be cool to have on a mouse). Anyway, looking forward to hearing what you think about the AM when you get it! It costs almost as much as Sensei, it'd better be worth it.
Incidentally, prices of Raze Spectre seem to have fallen where I live (EUR 39/USD 47 shipment included) and for all the reported trouble with the sensor (same as in R.A.T. 7 & 9) and other stuff the shape of the mouse seems to be ideal from my point of view. For the record, the G9X also seems to cost like half of what it used to. But I generally boycott Razer ever since that 'Cult of Razer' thing. If they want to act like a sect, they can do so without me. Besides, Zowie Mico has almost the exact same size and weight, while Azurues Mini from TT esports is similar. I'm generally somewhat tempted by TT products, especially the Azurues line and the Saphira. But Azurues has the same Avago 3080 that I have in my A4tech mouse (X-478K). As for Saphira, the fact that WhiteRa is a cool guy and probably wouldn't fool you about having participated in the design process of a mouse he'd never looked at, is contributing.