Re: New pups for a RG1570?
+1 on Air Norton. Awesome pickup!!
Edit: Im also using a RG1570.
Twin Laney 120w TFX3 Amp
Zoom Gt9.2tt pedal
I would recommend a Tone Zone in the bridge.
Paul Gilbert used on in Mr Big. Emailed him before getting mine last month and he said he still uses them and loves them enormously!
Petrucci used TZ's before the SS.
The SS has the mids taken out which is very metal sounding. Great for DT, but you can get the same sound with a TZ using an eq for metal, which you would do anyway.
Lots of Vai sounds in there too!
There are complaints that its too bassy on basswood guitars, but its all personal taste and depends on your setup, eq and amp!
Trust me, listen to some of the tracks on the dimarzio website, mine sounds exactly like the track "1990".
HUGE round tone.
As for middle pickup:
I got a HS-2, its a standard pickup. Ibanez customs use Blue Velvets in exactly the TZ, BV and AN combo. Must be good reason.
The bluevelvet is more powerful and more thinner, but just bring the HS-2 closer to the pickups. Also, I dont know anyone who uses positions 2,3,4 for DT sounds anyway, so you get a nice blues / paul gilbert crunch using those.
Besides, he now uses stock ibanez pickups ( 3 singles or the humbucker + 2 singles combo ) which are almost exactly the same.