I tried Grados many years ago and frankly I didn't understand the fuss. As I recall, they were very harsh to my ears. I ended up landing on the AKG K240 MK II better (and still use them 10 years later), and while a little different, find the APM equally enjoyable.
One thing to keep in mind. Sources, as well as Headphones/Speakers have different sound signatures. So your experience will be influenced by not just one or the other, but the pairing as well.
(I hope you find something helpful in my response).