So I finally got the pickups I ordered. I received DiMarzio Satchur8, D Activator, Duncan Perpetual Burn and also second hand Full Shred, which was suggested on another forum. I took couple of days with each pickup to really know them sonically and also took time to tweak the pickup/pole piece heights. The pickups are in order I tested them.
-D Activator
Easily the brightest and had most output of the pickups I tried. It had pretty good metal tone, but wasn't versatile enough. Too compressed for my taste and had sharp pick attack that was accentuated by PGM's overall bright tone. It also overpowered the middle SSL1 too much. Sounded a bit bland and dull on clean amp.
-Satchur8
I was quite surprised how much this had output. The tone and feel was nice, a bit like a Norton but way bigger sounding, more low end and less mids. It had strong emphasis on low mid frequencies that gave it nice thump when palm muting and natural harmonics when sustaining single notes with high gain. Cleans had cool broad tone and it had nice split tone. It was too big and broad sounding compared to SSL1.
-Full Shred
I was pretty sure I wouldn't like this one, but had to try it. It had similar amount of output compared to Satchur but was a lot more focused and compressed. It had kinda weird pick attack and hollow mid-mids which made it super smooth to shred on. It proceeded to have same hollow mids and pick attack for rhythm playing and I wasn't pleased on it's tracking while playing riffs. On clean it sounded very thin and unnatural, even more so when split and it didn't work well with the middle single coil.
-Perpetual Burn
I felt most confident about this one as it shares so many qualities I look for in a bridge humbucker. Nice attack, present high mids, tight low end and dynamic for medium output pickup. It has similarities to Pegasus (that I've in my 7-string Ibby RGD) and therefore felt like home for me. Low end is pretty tight but present and mids have nice grind to them when playing rhythms. Pinch harmonics are easy to get and single notes are followed with natural overtones. This one is really close with Norton, both in output and overall tone, but has a tad less mids and less picky high end. I think this one's gonna be my new favourite.
As I tried different bridge pickups I found out that I didn't like the Paf Joe anymore. It had too sharp high end that got ice picky when playing with distortion. However it had nice clean tone and exceptional split tones, I needed to find a new neck humbucker. After couple days of research I narrowed my choice between DiMarzio Air Norton and Liquifire. I ended up getting the Liquifire, since it is a bit brighter than the AN. It works really well with the PB and doesn't overpower it that much and they match extremely well tonally.
Hope you find this info useful in your own tone chasing!