Re: Paf joe vs paf pro
No experience with the PAF Joe, but the PAF Pro is great for shred. It's kinda like the quintessential shred neck pickup, lol. It's very bright with a very emphatic attack, and solid but not overly emphatic lows. It's not as low output as the Duncan Jazz or '59, and it's not as scooped either. I do think that the description on the DiMarzio site that mentions it having an "aww" tone is greatly exaggerated. It's not a mid-focused pickup at all, IMO. It's not as scooped as the average PAF-style neck pickup, but it's still very open-sounding. It has a great chimey clean tone too.
It's a great pickup, but I prefer smoother, more mid-focused neck pickups. I dig bright, chimey neck pickups when playing clean, but I find the PAF Pro has a very chirpy pick attack under tons of gain. That attack is what I think makes it great for shred, though.