I like both!
I enjoy romances that start out gently and develop slowly and naturally, as well as more dramatic ones. However, when I read too many stories with a calm, realistic romance, I start to crave a little excitement.
I enjoy dramatic stories for what they can offer as fiction. That said, I'm not a fan of love-at-first-sight stories or romances where the heroine is unconditionally showered with love, because I find them less immersive.
The more interesting, romantic, and thrilling the story is, the more enjoyable the reading experience feels to me!