Thanks again for your input seriph.
For now I'm mainly looking for simple MB pens like those shown below. I own a gen version of the black & gold ballpoint, but I'd like to try a black & silver (aka platinum in the gen I believe) version of the rep, and also a rollerball. Maybe in time I'll move up the scale to the more exotic designs if I can find good quality reps of the basic models first.
For now I'm mainly looking for simple MB pens like those shown below. I own a gen version of the black & gold ballpoint, but I'd like to try a black & silver (aka platinum in the gen I believe) version of the rep, and also a rollerball. Maybe in time I'll move up the scale to the more exotic designs if I can find good quality reps of the basic models first.