1983 380SL, ivory/dk brown, 46k miles, dual roller timing chain. 1986 560SL, red/white, 190K mile.
I too have a 1983 380SL - owned it since new.
There is a lot to like about 380SL and not much to dislike if it has had the Timing Chain converted to dual row.
You can take a dental mirror and a flashlight and look in by removing the Oil Filler cap to verify.
Not as powerful as the 560SL or 500SL and its a great little car for cruising.
If you got more money, the 560SL or more so the 500SL are more desirable.
There are some pluses for the 380SL over the 560SL, and there are some pluses for the 560SL over the 380SL.
For the difference in money, the 380SL is very compelling.