If you're going the E class route, mas okay pa rin ang W124 compared to the later model round eyed W210. As for the C class the W202, its also a good car, had one before but the back seats is kinda tight. Now that you mentioned the W126, those are among my favorite Benz, actually I own 2 W126's at the moment, a 1990 260SE and a 1981 300SD