In another thread, Dagwin made this comment: 'And in the end, I always change the CAB IR to a Celestion Red Back 412. Every preset sounds better with those ' This has got me thinking. When I first got my AA6 I decided to experiment with different IRs so I downloaded a a lot of free IR packs to experiment. The problem was that with these free packs, I ended up with endless options and if I tried every one, I'd spend the rest of my life tweaking presets. I really don't want to do that so i abandoned the idea. Dagwin's comment has got me wondering if I was over-complicating the whole thing. Perhaps for what I do with the AA6, I only need one or maybe two IRs if they're the right ones that suit the Atomic and suit the amp models I'm using. That way i could just do what Dagwin does and load the same IR to every preset. I am very much a child of 80s Metal so think of tones like Iron Maiden, Saxon, Gary Moore, MSG, Scorpions etc. Not entirely surprisingly, the amp models I tend to prefer are the Plexi and Brit800, though I also use the HotBrit, Kornfield and BE. Clearly I am naturally drawn towards Marshall tones and those amps that operate in the same ballpark. What would people recommend as great IRs for these amp models and those tones?