I used a Logitech v550 for 7 years (has hyperscroll), it worked fine all the years untill I broke the wireless receiver during travel. I loved the mouse and will buy another one if logitech had not stopped making one. The only alternate left to me was to have a VX M905.
After using it for a week, my experience below:

Pros : Works on glass surface and is ergonomic as my old v550,

Cons:
1.Unlike the V550, it cannot store the receiver inside the body.
2. Unlike v550, no plastic hook to stick...

I haven't purchased from flipkart. However its a master piece.
Now no need to get back to your keyboard every single time to perform most common things. 5 shortcuts now available on your finger tip; to make you & your work faster.
I would have given 5 on 5 but deducting 1 because price is bit on a higher side.
Go for it; its worth it.

Works as advertised. Used this mouse on various surfaces where my old mouse did not work at all.
Design is very good. Very convenient.good build quality.fell down from my hand twice,no cracks,shows the quality of material.
Comes with a nice carry case, which is very useful for frequent travellers.
Price is not very attractive, when compared to similar products.

I like logitech for the quality products they make, and this mouse exceeded my expectation

Also service from flipkart was excellent.

This is the best product I had used from Logitech. Had one 3 Years back and had been using day in day out and now brought this again.
Simply super !!!
Expensive but worth it...

Easily the best mouse you can buy. Flawless inter-phase and connectivity at all time. Super response and smooth to use. All surfaces I have tried are workable. The battery life is great and the feel lovely. It can perform multiple tasks and all flawless.