As far as the GBA games are considered Aos, CotM and HoD in order of favorites.
I don't really care much at all for HoD, infact, it might be my least favorite of the series, still not a terrible game there's just nothing to me that stands out from it.
CotM is alright, but I don't care much for the card system and I feel like the castle is all jumbled together.
I do feel like AoS is the first "Metroidvania" style game to get things right after SotN. It had a pretty interesting story, a good map design, cool characters (including one of the coolest Belmonts), and an interesting game play system.
But those are just my opinions