Those Mont Blancs are nice pens! Even the extra fine MB nibs are a bit too broad for me — I prefer the Japanese grind — but they are great and beautiful. They make great signing pens, which is probably why most world leaders use a Mont Blanc when signing important documents.

The fountain pen(s) I used didn't do well on rough paper, I remember that quite vivdly. Also, it may sometimes result in some of those ink blobs, meaning: my fountain pens weren't of good quality.

Yeah, cheaper fountain pens usually get the price by either using cheaper parts or skipping extras to save a few bucks here and there, such as skipping an o-ring which might save money and make the pen cheaper, but might also make leaking more likely to happen. There are some good less expensive ones. If you can't find yours and want to try again, I can give you tips on cheaper ones to order.