What's the best birth control?

I have never taken birth control but I would like to start it. My husband and I have a 4 yo and a 1 month old, think we are done but not sure so want to do a temporary birth control until we know definitely for sure. I go Tuesday June 20 for my follow up appointment after having my last little boy and will be discussing it then with the dr, any suggestions and intake on this will be very helpful. Thank you!