Samsung Galaxy Grand Duos - To Purchase or NOT - Pls help finally urgent

Hello Friends,
Given the offer from Samsung I have to decide now whether to go ahead and purchase Samsung galaxy grand or not.

The reason is Samsung Galaxy S7562 duos has considerable speed lag and small screen and I want to sell it second hand and intend to purchase Grand.

Pls confirm me following:

1. I believe speed is not an issue in Samsung Galaxy Grand because that’s one reason I am purchasing it?
2. I hope I can root it?

What’s the best deal - to purchase online from flipkart or visit local store.

Pls suggest few best places in Kolkata to purchase the same. I mean reliable shop from North Kolkata preferably?

Sorry for urgency but pls help friends.

thanks so much

Yeah Samsung Galaxy Grand is cool and i think you should buy it though you can buy visiting the local store but i think flipkart is cool as there deliver parcel damn quickly. It's my personal experience.

thanks Anand for your prompt and helpful response. I was asking for purchasing from local store just in case any extra deals are available.
Also i hope dual sim works perfectly in grand and is not confusing?

Thank u

Well you can prefer this mobile because in the price range of 21500 you are getting amazing features like po up play, smart stay, gesture feature, 8 mp camera, 2mp secondary camera, 1 GB RAM and much more high quality features. This smartphone packs with a lots of features and make this device a mid range smartphone with high end ambitions. So, i suggest you to go for it.