I bought this based on the immediately prior recommendation, though I had never heard of this brand.  It has made it possible for me to transport both 15" and 17" laptops with no back strain.  The case is much, much lighter than my former Tumi rolling laptop case, which I finally gave away because it was just too much for me.  This one is light enough that this 63 year old woman can easily stow in an aircraft overhead without help and pull down without endangering other passengers ;-).  With the laptop, it will hold a mouse, a flat keyboard, power supply and some papers, plus its shoulder strap.  Without the laptop, it will hold overnight clothing and makeup.

It really is bright, pearl finished orange/pumpkin, looks way more expensive than it was (based on the guesses of others), and I get 5-6 compliments on it a day.  I consider this a security feature also as its color is so unique, I could spot someone picking up my bag on an airplane or rolling it down the hall.

Detachment of the bag from the rolling chassis is a simple click of four clips.  The shoulder strap stows in the front zippered compartment and is trivial to attach.  It really does have a rain cover, although I haven't used it.  Seattle, with the exception being when we have a summer, while overcast, has mostly misty rain and I don't walk far at all from parking garage to office.

I can strongly recommend this rolling case.