For MA at least, I agree that it's probably 88. But teams such as 126, 155, and 69 all have done fairly well.
88 - They just seem to always build a great bot and be able to maneuver it effectively
126 - They're always a powerhouse and make a strong showing
155 - They've won the RCA a few times and always do well in competition
69 - We've built some pretty innovative robots, and it's true we don't go to the championships as much. Hopefully we can change that a bit
