Thanks for the update!
Would you list the parts and their part numbers. This is a valuable DIYer.
I have had cars with both style glow plugs and you are right, the pin style are so much better, especially in cooler weather.
You might consider writing an article and supplying some pictures for the DIY section.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)