For me, it was the 1st bass I owned: '73 Fender Precision (gorgeous sunburst with black pickguard & rosewood fretboard) which I paid about $300 or so for in the mid 80's. For some assanine reason, I thought it would be cool to put a Kahler whammy bar on it - WHAT THE HELL WAS I THINKING!!!!! The routing for that totally killed the tone of the body. A couple years later I sold the body off, bought a P-J body from Warmoth which I put the neck on & then had the frets taken out. Put the P pickup in, a new bridge on it and an EMG Select Jazz PU in the bridge position. I pretty much exclusively used the EMG, so I eventually just took the P pickup out & luckily put it in a box with a bunch of other gear. As luck would have it, I came across that P pickup & had it installed in my MIM P bass & it made a completely new bass out of it. It absolutely sings! That being said, I STILL WISH I HAD THE ORIGINAL '73 P-BASS!!!!!!