The original Rotring is gone; Rotring was bought by Newell Brands and is now just a label on copies made elsewhere. (They did the same with Parker and Waterman.) 20th-century Rotring is the real thing.

I had an old one and it broke, so I went looking for a new one,and it just felt cheap. Then I saw a pair at a flea market for $10, and only one had been used. I use a black rubber tape on them for comfort and it makes it less prone to cracking on the handle, and store them in a black box. ( Less UV ). I do keep going back by the store, and hoping their cheap ones get discontinued... But they are still. There.

What are the best refills to use for them?