There’s a lot of great stuff out there, but for me the only stuff I use:
EAS studios IR’s: they have the clearest low end, and require the least eq by far of any IR’s I’ve used personally. Ed is a great dude as well, and is a wealth of Information. He gets all 4 speakers throughout the entire length of the speaker from dark to bright for every mic. They truly are the best of the best in my opinion.
Titan audio: expensive but worth it. The best Marshall IR’s out there and I trust Zach as much as anyone considering I know who he learned everything from and does a similar method. Huge low end, tight, and clear.
Josh Middletons IR’s: Josh has a great ear, and these are phenomenal. His mixed IR’s are about as ready to go as you can get, and he has a great ear. You’ll be hard pressed to find better and a more tone obsessed guy.
GGD Cali: great IR’s, Nolly has a wonderful ear too and this is the ultimate pack for all flavors of the Mesa recto cab. He picked out 6 fantastic sounding cabs and the variations are perfect for getting different high end and diffrrnt midrange in your guitar tone for your mix.
There’s a lot of good stuff out there, but this is all I really reccomend personally 100 percent.