The ESP Guitar Company

if my memory doesn't feel like screwing me over than the EMG X series is just EMG's with a higher output. And, according to Google Search, it is EMG's answer to the Seymour Duncan Blackouts and/or Livewire.

i really dig the 85/89 combo that my friend had on his hellraiser

If you know the 85, the 89 is just an 85 that can be split as a single coil. The 85 is mostly used in the neck position (because Zakk Wylde decided so ^^) but it works very fine in the bridge as well, as brandono61cr suggested. I don't think you will want to split your bridge pickup, so I would put the 89 in the neck position.

As for your bridge pickup, either take the 85 as I suggested, or there still is the 81. I am used to the 81, you have it in your other guitar, see if you want to keep this sound. Or take the 85 if you want smoother sound than what the 81 delivers.

I'm not a specialist for X series, but I have heard the difference to the standards is not so important. I heard they are worth trying if you use a tube amp, if not, better go with the standards. But I wouldn't take this too seriously, if someone here tells you I heard bullshit, I probably heard bullshit.

FFS, you won't get the "Jimi Hendrix" sound just by coil splitting a humbucker