Mavic A719s and Velocity Dyads always seem to be neck and neck in the reviews. If you want bombproof go for the Velocity Chukkers, although they weigh twice what the Dyads weigh @ 2 pounds apiece. Peter White says " these are the strongest rims I have". I don't know if Velocity came out with the Psychos before or after Peter wrote that, if after than those may be the toughest rims made?