I've had good luck with Renwick (Score 1)

I bought a "Renwick" bag - it's leather, and has what I would call "heavy duty" straps and handles. It's truly my mobile office - I carry a spare battery, a 250GB external hard drive, power supply, etc. etc. It's about 3 years old, and isn't showing any signs of real wear. Hope this helps you out. AdM