Team 104 used 8020 quick frame material this year. We used the EZ tube connectors. The quick frame tube is a good alloy and the anodizing gives a nice appearance. Cuts nice with a miter saw. It allows a frame to be made very quickly. No bolting or drilling for pop rivets. We bought the material from the 8020 ebay store and saved allot. We had no problems with the plastic fiber reinforced connectors. It's a viable option for low budget low skill teams.
This is a link for the connectors.
http://www.eztube.com/connectors/connectors.html