I have a beautiful Ibanez Sr 1300 (it's great Bass and I can't be more comfortable with the neck ) I have Yamaha bb415 in beautiful color and it's the most 5 string neck I ever touched .even Ibanez 5bstring necks were too thick for me so it's kind of the best match . I have fender rumble 100 ,still learning use it but I get nice tone with it.(expect for slap ) Now I'm thinking about a fat humbucker or p bass tone.something better than my Yamaha ,like a fender p bass sound . Because I feel my Ibanez sound is not that fat that I like and my Yamaha sound good but still far from that .but the reason I'm asking this is that I can't choose between buy a 5 or 4 strong.If I buy five string I rarely use the b string that much rare that in my career I touched my Yamaha b string 5 time .I enjoy 4 string because I can play aggrasaggr witgowi be worry about string space or the sound they may make by accidentally touch b So I'm stuck here that forsy do I need a bass or I need other thing ? If yes a five or four strings ? Fender 5er are too big for me so they are out plus sadly 35 inch basses .