I'm also a heavy fountain pen user and I've found Parker ink (the same my father used), dries fast for fine-sized nibs. The black-blue looks really good on paper.

Currently using a Waterman fountain pen, but also have a Lamy safari nearby. Still don't know which one I like best.

For me the best part of using fountain pens is that I enjoy writing and taking notes more than with a regular pen. Also, my handwritting looks easier to read with the fountain pen.

Just my 2c.