I have never used an electric blanket. I have gone back and forth between down duvets (Ikea), good thick quilts (Pottery Barn), and very heavy blankets (Woolrich) though.

Things that help besides a good set of blankets are a bedroom humidifier (dry air feels colder besides drying you out), plastic over the windows, and an air gap under the bed. You need the air to be able to circulate beneath the bed, so don't just put a mattress on the floor and don't store a lot of stuff under the bed. You will be warmer with that air gap providing some insulation.

Wool socks or a good pair of sheepskin slippers (even fake ones) will keep you warm while you're up and about, and a good throw on the couch is a must. The best I've found are these faux fur throws. They are super soft and luxurious and have that weight, but I wouldn't use them on the bed or you will overheat. Plus they can be hard to clean. I vacuum/steam clean mine.