Hi. I have a set of Wickedbeard's ESB Fett armor. Jeff makes a quality product, have no doubt of that. Each piece of armor is made from two layers of thin steel with a thin layer if foam sandwiched in between. It is definitely not aluminum because magnets stick to it. The paint job is good and seems to track with the screen captures pretty well. It was good enough to be authorized for use in a Spike TV commercial too.
The back piece is made for a bigger person than the FettPride V3 armor (another excellent set of armor...I have both). The FettPride V3 in modelled after the screen used armor; Keep in mind that Jeremy Bulloch had a slender build during filming.
For my frame, the FettPride fits better. However, I would fully endorse Wickedbeard's armor to anyone considering it. The wait was long, but Jeff delivered within the time frame promised, kept in touch, and sent me progress photos.