Try to remeber...
For me 1970 is the best. That was my first TT. As I'm a sound freak I remember the Triumph and BSA triple 750s on full gas. Good sound and good performance!
Ago on the 350 and 500 triple MVs as well and of course the works Benelli 250 and 350 machines with four cylinders. I will never forget the first morning in my tent 15 metres from the fence at Glen Louge. Didn't have a clue about morning training and when the first arrived in practice early in the morning the wakening up was quite brutal!