Welcome to the forum! :D
It sounds like the bridge and middle pickups are out of phase - try swapping round the connections of the black and white wires from the Sinner and that should solve it (if it sounds even thinner, then they were already in-phase and that's just the way they sound together!).
I haven't tried the Sinner or Trilogy pickups personally, but I'm sure those in the know would say they'll sound better than the Lace Sensors!