I have all varieties of T-bird pickups in my various ’birds, Lollar’s, Thunderbucker ‘66’s, Novak’s, Gemini (UK) Devastators, a couple of used sets of Gibson RI’s that had been removed from some 2021 NR basses (these sets are marked “Lead” & “Rhy”), and some Gibson RI purchased directly from Gibson. One set from the 2021 NR are in my 2014 Heritage Cherry ‘bird and the other set will go into my 2013 EB . The ones purchased directly from Gibson are marked “Lead” only. I have a pair of these “Lead” marked pickups in my ‘97 Ebony ‘bird.
I don’t have any Lulls.
One of the ones I purchased directly from Gibson (“lead”) is in my 2019 LP DC Tribute, so this is a bass with just one pickup, like what it sounds like you are doing. I think it and the other Gibson RI’s in my others are a fantastic sounding pickup, big, full, and clear sounding. I can definitely say, as great as the Lollars sound, the Gibson is just a little better.
Also, the Gibson’s come in Chrome cans, while all the others are nickel. All of my nickel ones have just a hint of yellowing, nicely, and work well with the other nickel hardware on those basses. I had to make it a point to get chrome hardware on any bass I put the Gibson’s in. Possibly Lollar can make them chrome, but I’m not sure. I think Gemini UK gives you a choice.