Belmonts Revenge and Legends for me. I know Legends is the second most flawed of them (at least Adventure, even with its sluggishness and powerup losing, the game was built around the characters ability. Legends put enemies in unavoidable places (even using the soul powers)), and the metroidvanias are infinitely better, but I prefer the classicvania over the metroidvanias.
Still a lot I love in Legends. Sonia is my second favorite Belmont and I'd say better than Leon, but like everyone has said, the fanficy story is quite ugh. I think if it was a new character and not Alucard, it would've been better. Plus I wish we got a back story scroll or cutscene showing Sonia's family being killed, because everything about the story minus Alucard and the plotholes for Lisa's death are pretty good, especially for a classicvania.
I also haven't played any metroidvanias besides SOTN for years. I started HOD but got stuck and haven't played since. CotM I love, but it isn't as pick up and play, which is also good to be a deeper gaming experience, and Aria was sinply amazing, but again haven't played it in years.
Barely played DOS, never played POR, and I was gonna vote for OoE, as I'm playing through it rn and loving it, but I haven't beaten it yet, so for now,BR and Legends