Out of those two; go for the Kave, its just a better headset with better volume controls.
However, just to throw a spanner in the works, I'd actually go for a HyperX Cloud 2. They're pretty much considered the king of their price range at the minute (£69). You get a bigger and better sound driver in them then either of the the current options, and after I bought a pair last week, I couldn't be happier.
To put it into perspective, the respected reviewers at TechPowerUp review both of the headsets you are looking at, as well as the similarly priced (in fact cheaper if you look in the right places) Cloud 2. Both the Logitech and the Kave both get only average marks, with plenty of cons which include bad quality mics, poor build quality and even lacking sound quality.
However, here's what the same site say about the Cloud 2:
"Pros:
Excellent build quality
Very comfortable fit
Detachable microphone
Separate game/chat volume control
Multi-format support
Braided cables
Competitive price
Cons:
None
The Cloud II certainly delivers in the performance department, one of the best headsets in its price range. if you want even better sound quality, prepare to pay around twice as much for it."
So in conclusion, if you really must chose between the Kave and the Logitech, then Kave it is. But if possible, go for the Cloud 2.