Its what you need vs what you like...and then cross that by what you are prepared to pay....I like a good ol P like the rest of us,I keep one for boring Bass owners to touch,but Old stuff isnt always built well,and usually dosent like an aggressive touch.
But nobody in a correct,professional,versatile,state of mind takes a 4 string bass to gig,where they know that a 5/6/7 will offer AND deliver so much more