I like how easy it was to set up my model for our business, there are lots of tutorials online which make setup quick - also that we can easily upload reports/downloads from within Excel (which wasn't possible with some other modeling tools).
The fact you cannot change parameters once they have been defined isn’t ideal in hindsight as this would be useful when trying out different scenarios or models quickly without having rerun all those calculations again! You need certain software licences before using ASK; these will cost but if your budget allows then go ahead otherwise use another tool until suitable licenses become available at lower prices?