you can get the true real-deal anderson connectors, they are 1.5"x1.5", and I use them with 6 AWG wire. Sure, it's $17 for just 1 pair, but 320 amps continuous!
have you checked out robotmarketplace?? they even have clips to hold your masses of powerpoles together
http://www.robotmarketplace.com/prod...powerpole.html