Make sure you do your research, more so than just opinions on a forum. There are a whole lot of pros and cons.

Its been offered and pushed on me for years, but I have resisted and always managed to come out of the depressions with anti psychotics. Im not sure whats worse, but every single person I know who has had ECT has still had to remain on medication to function.

Im interested in learning more about electrical brain stimulation technology as I am not keen on full blown ECT but some of the machines that stimulate the brain to a lessor extent look hopeful.

Be sure you have exhausted all other options before going to such extremes. The potential side effects can be life changing. Its a matter of luck at the moment as to if it is a good or bad change.