first set: toa vakama metru
first titan: tower of toa (it's a system based set, but if that doesn't count, then it's Brutaka)
first small set: Dalu
first favorite set: Mahri Jaller (I never took him apart, so I guess that he was my favorite), or Matoro Inika, I can't decide. Either way, neither trump my first set.
first disappointment: LOSS (he was too expensive for what he is, and too small for what he was supposed to be)