Well im on Vodafone, and i can upgrade my phone now

The best deal the vodafone can give me on galaxy s3 is:

£36 a months

3k minutes
Unlimited Text
1gb data
Free handset
First 3 months unlimited data

+ I will keep my old number and my phone will arrive tomorrow.
I know 3 offer much better deals, but i gota wait until october if i want to move into different network.

I only use like 200 mb data per month, so 1gb is pretty a lot for me, so i dont really care about all you can eat data..

What do you guys think of this deal? should i? or should i not?