Yeah that's pretty tough but like a lot of other mods I didn't now it was that hard, also SSN Peppered is still super hard in the amount of note types and song gimmicks, and the remixes sound super hard on their own as well, so yeah it's still hardest in my book. And yes, I do prefer spamming over jacks.
Also hi Siivagunner!!!!!!!
If you're one of the people saying something like "what about this mod" then I'm really sorry, I just wanted to point out that SSN Peppered would be really hard, there's a lot of hard mods and I just picked the first 4 that came into my mind. Sorry!