Have you guys checked out the Otto Audio Otto cabs IRs? If you looking for some IRs that work really well with low tunings and Hi Gain, then definitely check these out. I've been using them for a couple of weeks. And they definitely my new goto IRs with my Amp Sims. I got a new video out using them with the Otto Audio II II II II Amp Sim and they sound brutal! Let me know what you think. I used them on my Squier Stagemaster 7 in Drop A, and my Squier Jazzmaster Baritone in F Std. And they really make the guitars pop in the mix.