I own several of these. I consider it a "sleeper" pen, because they are rarely mentioned and aren't sold all that often in on-line venues. These pens were offered with a broad range of nib sizes. The great thing is that they unscrew from the section like a Pelikan nib, for easy swapping. And some other brand nibs are compatible. I bought a Reform stub nib from DocNib and it fit in the Renaissance perfectly. Unfortunately, Pelikan nibs do not fit. The colors are a bit limited... I've only seen black and burgundy. The piston mechanisms work extremely well and the ink windows are easy to view the ink level with. If only they came with a silver plated option over the gold.