'65 was the first Twins team I was aware of, my first baseball memory, there in Mrs. Loerch's 1st grade class on the ND plains. Aren't those kid memories great, in the sense that, well, we didn't win this one, but we'll get the next one and the one after that.... Heh...
It's tight, but I gotta go with 65 as the top. 69 probably second, and 67 and 70 right there as well. And then.... well, 77 was a blip in a long, flat line, but we started cranking up again in 84, and you could see it coming.
There's my synopsis of the early years. It might be coloured by the mist of sweet memory, but keep in mind, that 1965 was also the year the Yankees began to SUCK, BIG TIME, and for a long time, (until Reggie came along). So there's that, too.