hi,ive had a few 190's.
good little car,bit boring in fact,not realy a drivers car.
but if you want a old skool motor there great,good cruzzer and with nice wheels and a bit of a drop.
1.8's are fairly dead on a carb set up,and watch out for 4spd gear boxes and wind up windows.
id go for the 190e,which is a 2.0 and is injected,again no ball of fire.
if looking at a auto,keep a eye on the gear change,slow to go up gears,and gear slip.
its a mercedes they say,and they are good as a car brand,but not that good,they do go wrong,and they do rust!
so buy with your eyes and not your heart.
merc wise ive had 190's/ 230ce coupes/300ce coupes/500sel's/560sec coupes etc, and ive always come back to bmw's,well never left them.
buy a early e36 and be done with it.