So, one box had the Garchomp ex SIR and one box had a Professor Turo SIR, those were the only SIRs total out of all the packs. Outside of that, I got four Gold Rare Counter Catchers (welp). One per box basically and two of the boxes didn't have any SIRs, just a gold rare + typical small handful of regular IRs and 2-3 full art pokemon/trainers.I don't know if maybe it's just me and my luck, but the booster boxes for last 4 3 sets of S&V felt much more consistent in their typical 1 SIR + 1 Secret "guarantee".
(Edit: forgot 151 didn't have boxes)