Which is Better & Cheaper - Braun Silk 7/7681 Epilator OR 7/7921?

I’m very confused between these two epilators?

Braun Silk 7/7681 Epilator OR 7/7921?
http://www.flipkart.com/braun-xpressive-body-fa…

and

http://www.amazon.in/Braun-Female-Epilator-Se79…

Which is the best? And where can i get it cheapest?

Im looking for a deal like …http://www.desidime.com/premium_deals/braun-sil…

Please help

Thank you.