First time I got the G303 I was vomiting for the feeling of the money I just wasted on buying it. I ended up returning it within a few days. I bought a g100s, ZA13 and liked them both much more. Until I snapped and missed the sensor of the G303 and wanted to give it another go. I bought it from another store, and I hated it just as much the first few days.
Then a week went by and I swapped my mousepad from goliathus speed (which was my favourite with g400) to a Qck Heavy and it got to be the best mouse I've ever had. I don't know what happened, or if I got possessed by some logitech loving demon, but it's by far the mouse that I've had the best performance ingame with, all sort of plays that even surprises me for having done them. I don't know what changed my opinion from hate to love, but I think it's a mixture of getting used to it, luck with actually fitting my grip perfectly, and of course the sensor.
So for anybody doubting the G303 I suggested trying it on another surface, always keep the surface calibration on default, and give the shape a few days to a week to adjust to it. If you're a palmer, stay away. I think this is meant to be for claw/fingertip.
I'm buying a reserve as we speak, in case I wont like the new G Pro... everything about the G pro sounds nice, but I'm a HUGE fan of mice with any sort of thumb grips, because it's the most important spot for me in mice.. and the g pro doesn't have anything, so it's going to be a gamble.
But no matter what, I think the G303 is always going to be a very special unorthodox styled mouse, where it works PERFECTLY for some, and a complete disaster for others.
Also the biggest mistake I see with people owning the G303 is the constant comparing with other mice... If you have a G303 and you constantly use another mouse that is much more comfortable besides it, then you will never adjust to the G303 shape, because your mind is always going to hate it, just because you prefer the other one.. then they start ranting about how bad the shape is. Instead of actually leaving any other mouse away, go ingame, play with it and having as a main mouse for atleast 2 weeks and see how you feel then.
TL;DR: try the g303 on a different surface, more smooth/slow styled where the 3366 sensor gets the freedom and air to track around. With my goliathus it was like my 3366 tracking is so damn fast, and the mousepad is damn fast that everything was just unbalanced. Don't compare the shape side by side with another mouse, leave it as a main mouse for 2 weeks and let it grow on you.
Edited by Aymanb - 8/24/16 at 12:51pm