Need help to choose laptop

[september593]

Hi this is my first post, so forgive me with any mistakes i make.

I am a JC student, looking to buy a new laptop. Uses of this laptop: some occasional gaming (playing world of tanks), daily computer uses, web surfings, etc.
Must have a certain degree of mobility
Also buying this laptop for video editing for projects, hate WMM.
Budget around 2k



Currently have a few shorted candidates
1)13.3 inch VAIO S Series 13P (Black)

2)15.5 inch VAIO S Series 15 (Black)

3)Samsung series 7 Chronos NP770Z5E-S01SG /NP700Z5C-S02SG

i want the sony 13p because it has a 3.0 GHz processor and has Imagination Studio VAIO Edition (DVD Architect™ Studio 5.0, Movie Studio Platinum 12), which i need movie studio for my vid editing as i dont want to work with WMM, however 13p does not have imagination studio preloaded, is it confirmed that i can install the imagination studio thru vaio gate?

for samsung, the GPU seems to be better, but unsure of the difference between the NP770Z5E-S01SG and NP700Z5C-S02SG, except from the graphics card, anyone kind to give me more details on that?

Need comments/recommendations
Also if there is any laptop which is quite good at around the 2k price range please do let me know.
Thanks a lot