Everyone has their favorites based on the cars they've owned or currently own.
I've always been a narrow body fan, they just seem a bit more vintage, which always seemed to be the point of a Morgan to me.
I've had a few +4's but 4/4's make up the majority of the 11 Morgans I've owned............😱
I always felt that the trad chassis was ok with a max power of 150hp ish, I accept that folks who do long continental tours might feel they want a bit more, but at any more than 75-80mph the wind buffeting is hard work for long trips....
More more more is just human nature, it doesn't mean it's better, it's just related to the size of your disposable budget.
I like the lightness of a 4/4, the +4 could be the best compromise car, +8- I always wanted one til I drove one, drives like a truck, Roadster- you don't need all that power to have fun in a morgan, Plus Four/Six- you might as well buy Z4/Boxster etc.......😁
They'll all leak, rattle and squeak, they'll all frustrate the hell out of you, they'll all draw a crowd when you park them and they'll all be fun.....!!!!
Go and drive everything, the right car will quickly become obvious to you.
Morgan's are expensive for what they are if compared to 'normal cars', but you certainly don't need to buy the most expensive Morgan to have fun.