I do on a sub 10.5:1 combo, the real beauty of the SDSS 2's is the flow is still great for the high velocity port design. But a fair number of street compression mild gear moderate weight 408-416 combos might do better overall than with these bigger ports. The SDSS2's keep up fairly well up to about .400 lift

There's no doubt to me the airwolfs have more flow/hp potential.... but they may not be the best Et wise for milder heavier flat tappet combos as I described where average torque through the middle contributes more to the ET. The airwolfs have a very broad torque curve as evidenced on Steve D's dyno mule, but not every combo will ET best with a port that peaks torque at close to 5k...unless your also willing to gear and vert your combo accordingly

As I said I think Bryce is very clever and a highly talented head porter, there's no doubt in my mind.