It's hard to recommend mice without knowing your palm size, your budget and the kind of games you play. Random recommendations here are more or less shooting in the dark.
I've used both of these mice (not the DA v2 Hyperspeed specifically but the shape) - the Orochi is a nice shape if you have small hands and you play fast paced shooters. However, it's not fun replacing batteries constantly. It isn't rechargeable. DeathAdder is a classic shape that has stood the test of time (they didn't change much for like 20 years until the V3, but it is on the larger side.
If you only play casually, it doesn't matter all that much. Get whatever and call it a day. Both of these options are perfectly capable mice... as long as it fits your hand well.
Just remember, shape is more important than any minor sensor differences and this can make or break your experience. For example, the GPX 2 Superlight which many people consider the best mouse on the market is completely unusable for me because the shape doesn't work for me. It keeps slipping out of my hand during big flicks. Out of all mice, I've probably dropped that one the most.
Another way of looking at this is saying that true egg mice like the g305 have mirror-symmetric spherical geometry (always positive curvature), which is really great for providing grip and a base of control that will scale the more tightly you grip without causing any shifting or readjustment in your hand placement or tension.
That latter point's probably the reason why the Orochi never worked for me, even though people call it an egg shape, because it was too short **and** the left side has negative curvature while the right side was almost totally flat, which caused a twisting motion when squeezing from both sides.
Shape and surface texture go hand in hand. You shouldn't need to squeeze just to grip a mouse, but if your skin's too slippery for the mouse's surface texture then the true egg shape's the best hands down.
Jimmy_212
