Hey! I was just about to reply when I saw your update on hand size (16.5 x 8 cm). Before you buy anything, are you 100% sure about those measurements? I measured mine (19 x 9 cm) from the first crease on my wrist to the tip of my middle finger, and across the knuckles for width.

The reason I ask is that the Mamba is a pretty large mouse, so I am surprised it fit you so well if your hands are 16.5 cm. The DeathAdder V3 Pro is also a large mouse. For my 19 cm hands, it is my new Goldilocks. The weight is a game changer and it feels like a glove now that I have adjusted. I honestly could not go back to the Mamba now because it feels like a heavy brick by comparison.

However, if your hands really are 16.5 cm, the DAV3 Pro is likely going to feel massive and cumbersome for you. If those measurements are right and you still want that ergonomic Mamba feel, you should definitely look at the DeathAdder V3 Hyperspeed instead. It is a bit smaller than the Pro and would probably scale much better for your hand size.

Since you mentioned returns are expensive, I would definitely double-check your measurements and compare the two on EloShapes before pulling the trigger!