I've got a mid grade Yamaha fretless four string that has a great accoustic sound, but I just cannot get the tone I want through my rig. The Yamaha has a cheap P bass pickup and the sound is weak. Don't want to drop alot of cash in this one. Can I get some sugestions on replacement pickups? Vintage sound? Modern sound? Toms if your rig sounds like a carefully executed fart...you won't get the job.