Precision M6500 Carrying Case/Laptop Bag

Hello,

I am collecting recommendations for a carrying case for my Precision M6500.

Requirements:

• Large enough to fit the system, but not so large it swims around inside.
• Well padded.
• Fits under seat on airplane.
• Can be either a roller or backpack
• Has a separate compartment for peripherals (big AC adapter, USB drives, DVDs, biz cards, pen/paper, cell phone)

Thanks in advance.