I've had good experience with Waterman fountain pens but the reality is, compared to a nice rollerball they are pointless and a pain in a lote situations. If all they use handwriting for is personal notes like invitations and thank you notes, a fountain pen can be nice to use and ink color selection is very expansive. However, if you're looking to buy them a nice day to day pen, that they will take out to sign things, take quick notes from phone calls, or things like this, I'd recommend a nice ballpoint or rollerball
THB, I used to be big into different types of pens and have a decent collection, but the vast majority of the time (and I'm talking except for maybe a couple times a year) I write with blue Pilot G-2s
