Garage shelving

Any recommendations on shelving brackets or systems for a concrete block garage?

I'm considering wood, 12 or 14-foot shelves, 20-22 inches wide (to accomodate big Rubbermaid-type storage tubs). Options are mounting the brackets directly to the wall or a system with adjustable bracket height. With the shelves mounted 3 and 6 feet above the floor, I won't be adjusting the height much, if at all. Metal freestanding racks won't do.

Another thread in the general section asked about work benches. Maybe this is a good time to start a "Garages" category in "The Ferrari Lifestyle" to consolidate questions and information on: car lifts, floor paint, etc. Rob?
Thanks in advance,
KevFla