If you've been stable, ECT is probably overkill. ECT will not eliminate the need for medications. ECT is not a cure. Personally, ECT is for patients whose depression level is so severe and unresponsive to treatment that their ability to function is pretty much gone, they are probably a danger to themselves, and they are perhaps facing long-term hospitalization if some very intensive treatment such as ECT isn't used. ECT is a very risky treatment that definitely should not be undergone lightly.

Are you in therapy to work on management of your symptoms and issues that might be continual problems for you? If you are stable, therapy would probably be as or more effective than ECT.