Had a really great experience with Octopus since Summer 2018. Our switch over was smooth from the previous tenants who were with a different provider, and I like the ability to change how much we pay each month into our account as we wish. Octopus had given us one of the best quotes, but I did feel slight uncertainty as they were a lesser known provider. Thankfully, it has worked out well, and I've had a good experience with trying to contact them when I've wanted/needed to. The monthly prize draws are a nice bonus too. Would recommend.