I have to say this about the Daddy Rabbit, It is very popular among SPA, but then again so is the KAOS series of airplanes, including the Dirty Birdy as well. Members are also building other designs such as the TroubleMaker, King Altair and the Panzer is becoming popular as well. I think the reason the Daddy Rabbit became so popular is because it flies exceptional and is not very difficult to build, so with that combination it is alot like most rabbits - it multiplies quickly!
Me personally I like alot of Joe Bridi's designs, so I am a Kaos fan. What can I say, some folks like Chevy, some like Fords or Dodge, and sometimes you find that odd ball out there that likes the AMX Javelin or Matador.