I bought this pair from Shoppers Stop for 3400 and it is currently at 2600 at FlipKart. Serves me right for betraying FlipKart. Anyways this review is for a price tag of 3400.
I have used this pair for 3 weeks. I typically run about 4 kms, three times a week at 10.5 km/h. So far, the shoes have protected my heels quite well indeed. My running speed has inched upward by 0.5 km/h; this is a quite a bit. Anyways, at any price under 4000, this pair is probably the best you can buy.
I ordered the 12 size shoe. A perfect fit though. Thanks to the person who reviewed the first. I was going to order 11 but after reading his review I backed off and waited until the 12 size became available. Even after being 12 it is a perfect fit for me. The shoe is very light but I do not know if it is what Adidas say it is. Anyway I am happy with it. :)