I think that's the weight of it and also the width. I was getting, first, wrist discomfort with the narrow and 85g G203. Changing mousepads fixed that. Then, my pinky started to hurt at the higher contact point because I had to grip the mouse quite firm to move it around well and also click well. Got a lot of weight off it and it's very very nice now to the point that I've heavily dropped CPI, playing more off physical movements rather than sloppily and fast with higher CPI. Now that I've got this mouse sorted out I don't think I'll buy a 310 Sensei. The 310 Rival weighs too much and this isn't 2003, I'm not using heavy mice anymore at all and I don't think I even care anymore for the beauty of a mouse in hand as long as I can play without pain and enjoy the sensor. I could have just imported the thing (DM 1 Pro S) and paid for the privilege but I just got a G203 figuring I could mod it. Like, that there thing says 110, 90g. 310 rival, 90g. The new sensei will probably weigh 90g too. News flash: no weight comes off mice of that class.
Bestbuy is selling the 3.5k cpi abyssus for like 65 bux with a mousepad. They disabled the steps over 1800 and it works fine. It's a high ride though and it cramps my hand but maybe you can use it. 68g or so and very useable throughout the cpi range. It feels weird to use but you can get used to that. It works best with fast movements.
Edited by PrincessSlipper - 7/12/17 at 8:08pm