Ultimate Travel Bag

Not a security related post - but heres one that is close to my heart. Decided to put this question out there for anyone who can help.

I travel quite a lot for short trips (2-3 days) where I need to have my Laptop case. Personally airports annoy the hell out of me, especially going through security. The last time I was in the airport, standing behind a queue of people who took ages finding all of the metal objects in their pockets, forgetting to remove laptops from bags etc - an idea struck me.

There must be an easier way than this

And so I have started my search for the ultimate short trip laptop bag. The type of bag that has enough space for your laptop, and all of your clothes etc. I decided to start with a short list of the features this type of bag would need to have.

• Needs to fit in an overhead compartment of an aircraft - by Aer Lingus's standards thats 56cms x 45 cms x 25 cms or 22in x 18in x 10in
• The laptop must be easy to remove for airport scanners, not stuck somewhere in the depths of the bag.
• Pouches at the front for passport/tickets
• Compartment for metal coins and keys. Basically a small compartment that you can put toss all of your metal items. It would be even better if this was detachable
  
• Enough room and compartments for all of your laptop stuff - chargers, dvds etc.
• Enough room for 2 days worth of clothes, including shoes - and the option to be able to pack a suit.
  
• Rollers & and a long handle. I'm over 6 foot so stooping while dragging a bag is a pain

All of that should not be rocket science. I would be interested in hearing what other people would have in their "ultimate" laptop travel bag, and of course any suggestions on existing bags I could get