Harry, welcome to TM. Like andymot I also enjoy my 4/4 Sigma, in my case since 2014, so what I say from now on is biased a bit of course. I agree with all, what the others have said here. The 4/4 is not my first Morgan and not the most powerful but for some reason I like her most. But that is only me. Of course she does not wear this sevenleague boots like a Roadster e.g.. If possible you could test drive different models before you make your decision.
The good thing for me is that with the exception of very few things, like changing the too soft springs in front and rear, which should be done in my view, or change the OEM Conti tyres for safety reasons when driving in the colder wet, you can enjoy her from the very beginning.
There is no need to tune the performance urgently, my 4/4 was also enjoyable in standard form. But for some people like me it is part of the fun to let make another manifold, a metal cat or a chip tuning. But all of this is not urgent. We were three times in Italy with her before I started to make tuning changes, and it was so nice. BTW you can use the nimble 4/4 nicely in the role of a cruiser for two as well but then you notice the difference between 112 and lets say 140 hp when packed with the suitcase and all stuff when driving the Autobahn on a hill up e.g..
Around 2011 or 2012 the 4/4 Sigma got the MX5 NC gearbox which suits the driving pleasure very much. But here are many happy drivers of older Sigma models who also are so happy with their car. So in this respect it is by far not a no-go if you see a nice 4/4 which „finds you“ if she has the Ford gearbox. The impression of the car in total counts more in my view than the addition of certain elements.
I also drive an Elise since 2007. You will make your own comparison but in a short sentence, my personal experience is the despite the high performance standard, the handling etc. of the Elise (which has other strong points to enjoy), the 4/4 always gives me even more the feeling of being underway and enjoying the moment of being alive if that makes sense.
