ADVISE ON WHICH PILL IS BEST WITH LESS EFFECTS.

Hi i am wondering if you all could help, i am currently on the depoprovera contraceptive injection and have been for the last 4 years but have found that i have put weight on which i cant shift. I have stayed on the depo injection due to it suiting me as i did not have unexpected bleeding and apart from the weight gain has been great. I have been advised to try the pill as my gp thinks weight issues are related to how long i have been on depo.
I am just wanting info from you all on what best suited you in regards to pill name and advantages and disadvantages. Any advice would really be appreciated.