We are running ALS only when we are running some drag and some track days(but on track days here in UK using ALS on track can result in black flag)
We are running Syvecs S6PnP ECU which can have 8 fuel/boost/ignition map plus with all important sensors(oil pressure,oil temp,EGT,ACT,wideband etc.),very helpfull if you are running different fuels,boost levels and ALS/LC settings
Our ALS is only would say mild,with proper ALS you will loose brake servo etc,not sure if I would use proper ALS on track or drag strip,currently we are running MDX321T(which is based on GT30 core) and spools well like with ALS or without the ALS
I would only recommend Syvecs ECU,with which you are never be limited in any aspect...