@ravewarheit : people liked the dart arms because of spike shots which shoot as fast as the glaives, they dont home but they do more damage and pop more bloons and they are 300 blops cheaper than glaives. (no offence dude, just saying)
tip : if you unlock a new racer, dont spend your points on them, max out your most-pointed character so you can earn xp points faster and upgrade your new racers