Have recently switched from E10 with SSE to Together Energy and it’s knocked £50 a month off my bill. Switch was very easy and had no problems at all. I have wet electric heating in a rented home which in the winter can get really cold. Not brilliant insulation so it can get chilly when heating is off and there is temptation to heat at peak times which I try not to do. Having said that my new peak rate is the same as SSE off peak so I don’t mind once in a while. Overall am glad I switched.