lamotrigine xr vs vimpat

Hi Everyone. i need some feedback on some meds. i'm 27 years old and have grand mal seizures, usually once a year but lately, i have had one a month. i was one Keppra and lamotrigine and switched to zonisamide to lamotrigine xr (the keppra made me crazy) the most current ones i have had were during working out which is insane to me because i was told working out is to help with epilepsy. My neurologist offered me switching lamotrigine to vimpat. apparently, if my hormones are off balance or high that can cause a seizure. However, im on birth control so im not pregnant nor have periods. anyway, i wanted to see what people thought about vimpat. ive been on lamotrigine for almost 8 years now so and i hate to change meds again but i feel like this one could be the culprit. i love zonsiamide so i won't change that one (i tried switching to zonsidamide and topiramate but apparently i would be at high risk for kidney stones) please share your stories with me!