Finally my Travelpro Crew 8 20" rollaboard has arrived.

I must say I'm impressed with its design and how compact it look even after packing things (unexpanded) in it. However, I think the external organizer, which is unique to the 20", would not be able to hold much and it feels compressed after fitting my 15" MBP into it. Internally, it has reasonable space but it's probably sufficient to hold clothing and accessories for short trips (< 5 days).

For now, only time will tell when I being using it for my trips. Stay tune for updates!