I'm not really obsessed with the pitching of the SP-1200 or chasing some older myth / record / whatever. It just sounds amazing as a sampler. Strong, powerful, dry drums that don't need any further processing. It definitely is noticeable to my ears, and the sound (not workflow obv) is preferential to software in my opinion.

I received a track to remix the other day and I said to myself "Those are definitely SP-1200 drums". I read an interview with the artist later, and I was right. So it def. has an identifiable sound.

I'd just like something that emulates the grungy re-pitching sound. Maybe even making it even more extreme.

This. The thing just bangs.

You might like this:
https://low-hiss.com/

It does not emulate interpolation and aliasing correctly at all. Looks like it only emulates UI, but who cares?

There is mentioned on their webpage:
"eSPi makes the gritty sound & effective workflow that helped create your favorite beats of the 90's available right at your finger tips for the very first time, with no limitations."

[EDIT ]
I was wrong. The last video on their web site actually shows pretty much correct interpolation and aliasing. I was using the original SP1200 for 15 years. Workflow looks like close to the original as well. They do a good job. I'll try this, thanks.

Wavetracing SP950 and Beatskillz SampleX did put my fever away, eSPi is nice but standalone only