I forgot to mention why country bass players favor the Precision. Because the tone is less complex, coming from one pickup, instead of two like the Jazz bass. Also, the tone is loaded with rich midrange, just enough bassy bottom, and the highs can be attenuated as needed, but usually rolled off about 50%. The allows the bass player to stay out of the way of the vocal and the lead instruments and puts the emphasis on the bass' role as a rhythm time-keeper with the drums, more specifically the kick drum. Take the swing rhythm which uses the four-on the floor bass drum pattern, the bassist then follows with a walking bass line that plays every note with the kick. Or the half-time, 2 beat traditional country feel where the bass and kick drum are in on the "one" and off on the "two", in on the "three" and off on the "four" leaving room for the snare or side stick to be heard without an increase in volume. The Fender Precision is easy to get a sound out of, without complex onboard electronics, or the dreaded Midrange EQ which can make a bass sound great by itself, but when you are trying to mix with a full band, once you have added or taken away midrange, it can be very difficult to fix in a mix, and often another player is required to come in and do your part over, with a Precision. Best thing to do, is to decide do you want to be a clinician and play solo like Victor Wooten, or do you want to be the anchor of a great band, like Cliff Williams from AC/DC or one of my favorites, Tully Kennedy from Jason Aldean's band, who helped me understand alot of what I was missing out on. In today's high-tech world, and Bass Player Magazines, NAMM shows, and the internet, we see all the great new gadgets, and we get "GAS" and then we read articles about our favorite players (most of which are highly distorted as to what they "really" use). It all comes back to the music, can you be responsible and serve the music with what it needs, and not what you WANT it to have. When you play, do your band mates smile because what your playing feels good and fits the song, or do you find they are constantly bitter, or trying to give you advice, or even worse, talking about you behind your back. Bottom line, get a Precision bass, a good amp, a clean cable, and prepare to work.
L.S.D. (lead-singer disease, some never recover) try a five string P man! see what you think, or just go crazy and buy a crazy custom job and roll with that, either way, YOUR sound is YOUR sound, and don't let anyone tell you how many strings you need. 
