Pen With Certain Characteristics

[wanahakalugi]

I recently found my grandpa's old sheaffer 550 F nib fountain pen sitting in his basement. I inked it up and tried it out and absolutely LOVED it. It wrote super fine and dry, but it was buttery smooth. Additionally, it appears to be a pretty springy, soft nib, as I can squeeze some fun line variation. However, it is my grandpa's pen and I intend to return it soon. I was wondering if anyone had tried a sheaffer 550 F nib and knew another pen that was similarly fine and dry, yet buttery smooth and has similar flex AND is hopefully cheaper than a normal sheaffer 550. I would like <$30 and prefer a metal body, but the metal body isn't as important.