Used Dingwall Afterburner 1
You will never be disappointed. Best B string EVER! The tone is just superb, balanced and even across the board. They record great, sound amazing live, are a very comfortable weight, they can go from vintage to modern sounds very quickly (neck p/u soloed cops a great P-bass tone), and the attention to detail is fantastic. You won't get more bass for your money anywhere.
+1
My ABI is probably the best deal I've gotten so far. For close second, though, my JC Custom SC has more tonal options and fits better in some situations where I can't get the tone I want from the Dingwall - and it's a joy to play.