Mitch, here's my nickel's worth on 70's tone pickups:
Depends on what you want for 70's sound. There's 70's, and there's true PAF tone.
I have tried quite a few US p/ups. I can't comment on the Dry-Z's or Dry-1982's, or any of the well-regarded British or European p/ups. But, from what I have tried, the very top of the 70's sound heap are Peter Florance VooDoo 59's, and Wolfetone Dr Vintage. They are not quite true PAF, to my old and somewhat damaged ears, but they are exceptional for what they are. Jim Wagner makes some fine p/ups, there are lots of others, but I put these at the top. Better than any of the T-Tops, Shaw, etc that I have installed and played.
For true PAF sound, I have a couple pair pre-T-Tops. One of them is as close as I will ever get to PAF's, because I'm not paying $5 k for a pair of p/ups I could have bought for $100 back when I was in college. But, for folks winding sound-alike p/ups, the very best that I have found are Tom Holmes H450/H455 - around $600 a set from Tom, with a 4-6 month waiting list; Dave Stephens Vintage Lab - around $400 a set, with 4-8 week waiting list; and Wolfetone Legends, $250-$300 and pretty much 1 week or so. I can't put these in any particular ranking; I just don't think there is such a thing as "better" at this level.
Each of these is excellent, true PAF tone, and each is slightly different. Big surprise - none of the late 50's PAF's sounded exactly alike, either. They do seem to take a couple weeks to "play in," after you get them set about right. Don't know if it's the magnets, windings, or what, but there is a subtle change in the tone after several sessions of playing.
So, that's my take. Remember, your mileage may vary..