I just bought this one: 13.3" quite light with good battery life

1.8 kg is still heavy for me..lol, my current one is about that. hows the temperature control?

It'll be used mainly for testing and to meetings, so I'm nit concerned about the temp and it's like half of my MBP already in weight.

You could try their other models of the same series. I think 3810 is quite light too. They do have ones as light as 1.2 I think.