I am requesting recommendations on a really light efficient carry on?

I haven’t been doing car rentals because Seattle, where I have continued obligations, is bus and walking friendly and parking fees are wretched.

Makes the last day of wretched as the earliest flight I can get are usually evening flights.

I have tried a back pack and a generic carry on which is bulky and doesn’t manuever over the the often uneven terrain very well.

As far as what I carry on with. A couple days of clothes. A huge pill case. A netbook a folder. A toiletry bag. A supplement powder. A second pair of shoes and a light jacket.

I am usually a heavy packer. Or at least like a lot of room in my suitcase so I can bring plenty back with me. So efficiency and manueverability are new concepts to me.