Many moons ago, someone from Tacoma or thereabouts, a terribly nice man, talked me into replacing the TB Plus on my Explorer RI bass with those Lulls. I was tempted by the chrome look - always a silly sentiment for lasting musical decisions. The bass had sounded great before, but with the Lulls ...... it just now sounds about ok'ish, the bass has lost calm authority because of them. I find their praised growl messy to the point of on the tinny side.They have none of the warmth and oomph of the TB Plus - and if you dig in hard, they are not able to take a harsh signal as good-naturedly as a TB Plus. And I've played them over Ampeg SVT, Markbass, Ashdown and Orange.I wouldn't be surprised if they are patterned after TB Bicentennial sidewinder pups - I never liked those either.Your mileage may vary.