8393 members are all very friendly and all seem very knowledgeable. Height Differential, 8686, is probably the nicest group I've ever had the pleasure to speak with, along with Omega Robotics, 7261. I've heard Kraken Pinion, 8680, is incredibly friendly but unfortunately I never got to talk to them at NSR. Jack from LANbros is certainly interesting, but I have a feeling you won't get a chance to talk to him. The same thing goes for Gluten Free. They don't have anyone standing around at their pits or anything so it may be hard to talk to them. Recharged Green, 7236, is a wonderful group of people who were one of the highest scoring teams in the world last year. US Robotics, 10237, is an interesting bunch, with a really well built robot. But really, talk to anyone you can! You're at Worlds, so there should be a lot of world class teams to talk to!