Some love the P-lip, some dislike it, and some find it so-so. The standard bit usually called a fishtail is available on many Petersons and if that's what you like, I'd buy it with that stem. I have one P-lip pipe, a Rhodesian 999 in the Killarney series. I enjoy the pipe and never avoid smoking it, but I haven't bought another, and I've bought six or seven Petes new. My objection is that you end up with more stem in your mouth than with a fishtail, and the supposed advantage of directing the smoke toward the roof of your mouth to avoid tongue bite doesn't solve any problem for me. Several Forums members smoke almost entirely P-lip. Yes, you can find replacement fishtail stems for P-lip pipes, but it is some trouble, they don't always fit as well as the original which is usually a precise fit for that pipe, and why spend the time? You can buy almost any Peterson, new or estate, with whichever stem you like. I did receive a gift pipe from a friend, a Thompson Cigar house pipe, an estate, stamped West Germany, with a P-lip style stem. That would have been okay, but it oxidized after polishing back to black after a single smoke. So I sent it off to have it refitted with a tortoise shell fishtail and it is a better pipe now all around. I recommend buying what you prefer in the first place. Some sites seem to give a slight discount on Peterson P-lips, because they are not as popular perhaps. Don't go for the price, go for the pipe and stem you want.