There were build around 400 thousand clubman (1000, 1100 and 1275GT).
More than 5 million "round" minis were built.
Either way its all up to you. Personaly I've got 2 clubman. one 1971 clubman 1000 and a 1975 1275GT.
My father had one 1971 clubman 1000 and a 1974 Mini 1000 (round). He likes the round one ten times more.
If I were to buy a round Mini, I would go for a MK1 or Mk2.
Maybe also a Innocenti Cooper 1300 (Italian version)
Donīt have more garage space though