The heavys are alot more crash and bash, just what we like, but the feathers can be fun to watch in my opinion.
I also like them because theyre much more easier to make than the heavys.
We cant make any heavys, because we have a very small workspace/storage space and the money.
We keep our bots down the garage, and we work down there aswell.
I would love to have a heavyweight, or atleast drive one! (Espessially Turbulance/Appocalypse, love that robot, drools)