i just bought the duo for the reedy race and it was nice,u cant really think well if one blows up i have the other cause then u might as well say if 2 blow up i better have a third,there always maybe but..??
due is nice cause you can charge your packs then i was charging someone
elsis smaller battery at the same time,u can adjust for size of battery..
just my food for though,the extra room on the table is great also..