I've heard many times that Mont Blanc pens are great and everything, but are very expensive. Now I've noticed that refill cartriges for some models are sold for $5 - $10 at places like office depot. So I was just wondering if anyone thinks these cartriges would write much better than a normal parker cartrige? And if so I'd just need to find a rather inexpensive pen it would fit or modify to fit.... Or are these pens just all about how they look and not their feel?