What are you writing with now?
I have a bunch of P51's, areo, Vac, and mk111's, and I love them all. But I won't take the mk1 or vacs out of the house. I'll carry a Pelikan, Montblanc, Sailor, almost anything that can easily be replaced. The P51's are no longer made. Pens fall out of your pocket, off the desk, your backpack gets snatched, all sorts of things can happen to an EDC. You might consider the Lamy 2000 Makrolon for now, the fiberglass body will take a lot of wear and tear. Plan to get the P51 for graduation, your birthday, or Christmas. Especially if you can get someone to gift it to you.
Also I suggest you steer away from the P51 Vac. I know you have your heart set on one and they are really great pens. The sac is their Achilles heel. It is latex, You might look for an areo with a plyglass sac. They are extremely durable and easy to clean, and more forgiving of today's inks. I only use Waterman Serenity Blue in my Vacs. I'm less conservative with the Areo's equipped with a plyglass sac. You can put almost any ink in them as long as you maintain good pen hygiene and clean them regularly.
There is a small amount of areo's out there with what looks to be a black latex sac similar to what is in the Vac. Be on the look out for these. I ended up with one out of carelessness. Eventually I'll change out the sac. Look for a clear plyglass sac in your new P51, you won't be disappointed.
I'm sure you will have both the Parker and a 2000 before too long.
Whichever you choose I'm sure you'll be happy with it. They are all quality pens.
Answering the First question: Sheaffer school pen, Wearever Pennant, Sheaffer Prelude, Pilot Prera, Esterbrook J, Parker Vector, Lamy Al Star. USED TO USE: Pilot Varsity, Sheaffer VFM, Parker 45, Parker 21.
I'll keep that in mind. I have not had the problem of getting my pens stolen. I use Waterman Blue, Skrip Blue, Noodler's Black, Jentle Turquoise, Lamy Blue, and I occasionally use a special bottle of Skrip Orange/Gold.
Vacs aren't notoriously unreliable, right? I own an Estie and a Wearever Pennant, no problems for 2.5 years.
Edited by AL01, 04 May 2017 - 15:25.