Hey there, so sorry that you have been through so many meds!!
I hope zonegran is a good one for you. It seems to be a love it or hate it med. My kids have done fairly well when on this one. For my son, this was less sedating and impacting his thinking far less then any other med he tried. He did not have problems except on high doses, then he could not think at all and had more seizures. It is the med I am working to get him back on.... My daughter also has done pretty well on this one. It is controlling her mild seizures pretty well and has reduced her seizure related headaches some.
You can avoid any issue with kidney stone by making sure you drink at least 6 glasses of water each day.....
Best wishes to you!