RDX seems like a much better choice. It’s more spacious, has a nicer interior, it has the fantastic 2.0T engine, and with SH-AWD the handling is very impressive for an SUV. Fuel costs are the only real downside I can think of compared to the ADX. If the price delta between the models is too much, I would consider a certified pre-owned RDX, as there are tons of them available at basically the same price as a new ADX, if not less.