Depends. If you never want to get pregnant again, the best thing is for you and your partner to both have your tubes tied (tubal ligation for her, vasectomy for him); if you want to consider getting pregnant, but not for several years, a Progesterone iud like mirena, (levonorgestrel) is a good choice. If you want to try for a pregnancy sooner, and can remember to take a pill every day, the pill; if forgetful, Depo-Provera provera.
IUD/Implant. Regardless of your age, blood pressure, family history, or reactions to other birth control, the most effective and safest methods of birth control are long-acting progestin-only methods, such as the implant or the hormonal IUD, which decrease rates of endometrial cancer and decrease bleeding. They're safe, reversible, and don't affect weight gain/mood. They're almost as good as getting sterilized.