@m1k3 My favorite stiff-nib in that price range would be the TWISBI 580 demonstrator... most demonstrators are a little ugly, not this one, it is my absolute favorite at the price range.

One nice little thing about it is the nib comes out easy and can be replaced. It easily fits many other nibs of other brands. While the stock twsbi is great one thing i have done that i love is i bought a 100 year old broken wet-noodle (very soft flexible nib) fountain pen and salvaged the nib and put it int he twisbi... its amazing!