Re: Modern Santana Tone
I get pretty nice results with an Alnico 2 Pro in the neck and a Pearly Gates in the bridge (tone rolled off a bit, but I'm also using a 0.047µf cap on my tone control to get things a bit darker). The Alnico Pro 2, I think, is warm enough and has a nice midrange. The 2 p/u's together can get that warmth and a bit of that "ringing" mid tone.
It's not exactly the same, but it still sounds great through my Boogie Mark 4, and (interestingly enough) also sounds pretty convincing through a Marshall Ed-1 "Edward" Compressor, into a Fulldrive 2, into a Fat Boost and into a clean Fender, or even into a clean Roland JC-120. A little less so through a POD set to a similar clean amp.
I don't know if you'd call it his "modern" sound, but I can definitely get an "impression" of him with that setup.
Brett