I'm 50 and considering asking for ect, but I'm scared my age will be against me. I had it when I was younger without too many problems and right now I'm drawn to thinking ANYTHING has to be better than depression. I'm really convinced it will blow my memory even though it didn't have long term effects last time.

There are lots of threads about etc in the Other Treatments forum, you could perhaps have a rummage around there to see what you find. There's also a seniors lounge forum so maybe you could ask the same question there too. Seniors' Lounge - Forums at Psych Central