My 4/4 is light on all counts. I've had each trad model over the years and if you are looking for light and nimble, the 1600 4/4 with Mazda gbox is as old school as you can get. It's the essence of fling it around and accounts for the enduring appeal of Morgan's smallest. But if you wish to tour in it the larger cars offer more comfort at the cost of heavier controls.
Bet you fall for the 4/4.
But luckily, we all disagree very happily.
Nick