I am having a difficult time choosing replacement pickups for my Fender American jazz. I use Ampeg amps (SVT, 3 Pro and 7 Pro) and a 610 Ampeg cab and Eden 410XLT ... I often find that my sound often gets muddy when I play live. I do like a warm, fat, full sound in the comfort of my practice room. However, I have never been able to reproduce this sound. I have tried adjusting the preamps of my amps when playing live and have often found that I have to sacrifice too much bottom end ... resulting in a tone that I am totally unhappy with. There are so many replacement jazz pups. I have read tonnes of reviews here on TB. It has gotten to the point where, the more I read, the more confused as to which pup to go with. Can you folks suggest some particular pups and tell me why they are a good choice. Your help would be greatly appreciated.