I would say that the Sigma engined 4/4 is much less common used than the Plus 4 though Oakmere do have an 2018 4/4 in at the moment which Im sure you could have a drive in unless it is bought online unseen like Morgans were in the first lockdown.
I bought my 4/4 from Lifes though they no longer sell Morgans. Mine was almost an impulse buy (Not like me) as my wife dropped me off at Lifes to browse whilst she was shopping and I was offered a test drive in the 4/4.
It was so much more comfortable and better riding than expected that I had bought the car when my wife came back from shopping!
