I've been using them since my early school days and use one or more daily, the smoothness of a well tuned nib on decent paper with a shading ink is something special. It's what brought me over to the turning side, so many nice materials that custom pens were being made out from, I couldn't afford all of them so have invested the money in equipment instead. My spreadsheet currently lists 125 fountain pens from the 1920's through to modern items (excluding ones waiting repair) and roughly 100 inks, so I've a good frame of reference. I'm currently looking at around 12 inked on my desk although in fairness I've just returned from a holiday with my cousin who is also a bit FP nuts.
If dryout is your main concern I can recommend both TWSBI 580's which have decent o-ring seals and last for months with no dry out and any of the Platinum #3776 Century pens with their slip-n-seal caps, the blurb states up to two years capped with the ability to open and write. I can't quite attest to two years but have had at least one solidly inked for over a year with no issues, four of them make up my desk set of pens.
There are ways and means of cleaning pens from even the worst dry out but these days it shouldn't be a major issue as seals and inks have also evolved significantly, although there is a massive wide range with large differences over saturation, flow, lubrication, dry times etc.
