The next step could be Montblanc ballpoint pens, but that's a very different level where it comes to money; the writing experience is far beyond that of most ballpoint pens at a sub-100-USD range.

Then there's fountain pens, which is a whole new ballpark... If that interests yourself, I recommend these brands: Platinum, LAMY, Pelikan, Sailor, Montblanc, Pilot, and Nakaya, in no particular order.