Diox55 :
Think of it this way: your a sniper, and you have a choice between 2 rifles. The first one is 15 kilos, and has good stopping power maybe overkill. Then there's the second rifle, which is 10 kilos. It has effective stopping power and won't weigh down as much, which one do you choose?
You make a good point, and i appreciate the suggestions, but unfortunately i carry some heavy gear when i travel and it's not a lot, but with a laptop on top of that, it's going to weight a fair bit. I can always settle for something a bit heavier, but the lighter the better really.