Well you should buy the European version. That's what all of us Pakis have since we get better pings on European servers. You should buy European because both the game clients (what's there on the DVD or in the downloaded files) and the CD-keys are region-dependent.
Just to be safe, get the game from UK. If you wanna buy online, Blizzard's e-store is the best option. Just make sure you get the European version.
Yeah, it is amazing, I mean I thought that with a little practise we could easily go (I mean go) to the championship gaming matches. But this video, although it made me feel depressed at our skills but it inspired me. These guys are true gamers, I was so shocked after watching this, it felt like the video was being Fast-forward and their movements were right on the right keys, no mistakes. Truly amazing.
We have a long way to go bro. A long,long way.