When comparing Corsair Vengeance M65 vs Razer Lachesis, the Slant community recommends Corsair Vengeance M65 for most people. In the question“What is the best gaming mouse?” Corsair Vengeance M65 is ranked 48th while Razer Lachesis is ranked 74th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Sturdy mouse wheel
Pro Aluminium base with configurable weights
Pro Interesting futuristic design
The Corsair Vengeance M65 has a very interesting futuristic look to its design. With its metal core to the 3 plastic pieces on the outside of the frame and the over-sized scroll wheel.
Pro Braided cable
Helps prevent kinking, curling and protects the cable prolonging life of mouse.
Pro Ambidextrous
The Razer Lachesis is an ambidextrous mouse.
Pro Shape and size good for medium to large hands
The Razer Lachesis is a great mouse for those with large hands. With the hump where the users palm rest being a bit further back than a lot fo other mice it makes a good fit for those large hands.
Pro Custom color lighting
Using Razers Synapse software users can customize their color lighting.
Pro On the fly DPI switching
There are two buttons under the scroll wheel that allow for on the fly DPI switching.
Cons

Con Bad Palm Grip
With a design that is not ergonomic at the back and side buttons that are so far out it is not a recommended mouse for a mouse user who prefers palm grip.
Con Has input lag and smoothing
Being that this device is using a laser sensor there is expected lag and smoothing.
Con Horrible lift-off distance
Lift-off distance is advertised as 1mm, which is not true, it's more than half an inch.
Con Unreliable drivers
The mouse freezes, lags and the mouse pointer might even die.
Con Unreliable CPI switcher
On-the-fly CPI scale resets, and sets to wrong settings often.
