The best birth control is ABSTINENCE, as taught in sex ed. Nothing is 100%. Condoms are 98% safe as is birth control. Although, I am part of that 2 percent who got pregnant whilst on the pill (Never...
probably the most popular is yasmin. the reason being that it does not lead to weightgain as so many others do. see more details on all the popular ones here: http://www.oral-contraceptives.info