My best could be either of 4 overs, seven for 8 or 9 overs, 7 for 19. One in a 20-over game (bowled them out for 14 and I got sent in at three to face 3 balls and score 5 as we won by 9 wickets) where the pitch didn't seem to know the meaning of the word "bounce". Literally, nothing got more than a foot off the ground, wherever you pitched it and however tall you were. Totally impossible to play on. The other was in a 40-over game where everything fell into place, the ball's never come out like that ever again in my career. Everything landed almost exactly where I was aiming, I was cutting it to order, swinging it round corners, bouncing some off a length, scuttling some through past the ankles. Pitch wasn't the greatest, but only 2 of the wickets were due to uneven bounce.
Worst? Could be anything of the 2-25-0, the 4-32-0, or something else that I've put out of my mind so effectively that I can't remember it. Never gone for more than 25 in a 4-over 20-over-game spell, so can't have one of them.
Seriously, though, I'm almost as good an epitome of inconsistent as Chaminda himself.