The Urban collection no less than 32 variations (pens / rollerblade / feathers). You will find more than one to your liking.
Ink: This style uses QuinkFlow refills. This is a very fluid ink (low pressure necessary) biasing the ink Montblanc pens. However, it is unclear to me (I'll try the black next time).
Refills available: black, red, blue for normal and fine tip (except for red, I have not found a fine point).
Refills cost about 5 euros (3.3 euro on the UK Amazon site!).