I just played my Heritage H-150 "Les Paul" with my newly installed HighOrder pickups. (a 7.7 in the neck and an 8.6 in the bridge, both with AlNiCo2 magnets, unpotted, with nickel covers). These pickups - for lack of a better word - are incredible! They have such a satisfying smoothness and airyness to them. Chords have such an even chime displaying incredible note definition and evenness. Single note runs, bends, etc. evidence a sweet personality and individuality that just did not exist in the previous pickups (Gibson '57 Classic in the bridge and an unknown "Gibson USA" PAF in the neck). These pickups really do bring out the tonal qualities of the guitar and are so well balanced between the bridge and neck that I don't have to worry about one overpowering the other. When I play both pups together it's such a sweet blend; the tone is perfect for slide! In general, these pickups provide exactly what I wanted; the character of the guitar. Who could ask for more? Also noteworthy are Jeff's (Mr. HighOrder himself) personalization of the pickups to me; "Tom - Keep playing the blues! Jeff" adds a great final touch! The product itself (visually) evidences impecable craftsmanship. Jeff has been a pure pleasure to work with (both email and over the phone) during my selection process. He was patient and answered all of my questions and offered suggestions. When it's time to replace the current pickups in my Heritage 535 I know just where to come to; HighOrder Pickups!