For the shop I have been using the Lee Valley organizer, but it's not very portable. When I need to take an assortment, I have been using the C-man $12.99 kit with the red box thats always on sale. It has two see thru compartments which allow various additions...
New acquisitions this week... OTC 6550PRO, Gearwrench ratcheting puller I've been drooling over, hex ball end power bits SAE/Metric by Bondhus, and some power torx bits. I don't know the torx manufacturer, but made in USA and seems like good quality.