Ask HN: Which hand baggage do you use?

I am looking to buy a new hand baggage (carry-on with wheels), but I nothing seems right.

Since I will be travelling by plane and currently all the flight that I will take has a limit at 7kgs for carry-on. But most of the bags I saw start weighing from 2.5 to 4.5 kgs. That seems like a huge waste. My 13' MBP is 1.5kg, along with the chargers and my kindle, about 2kgs in all.

So, I am looking for bag that is as light as possible and has a nice laptop pouch. I don't want a backpack.