Is there a way to figure out best internet/electricity/phone provider?

I'm getting kind of overwhelmed. I realised using Internode for the first and Telstra for the last that I'm probably just leaving money on the table, but I'm having trouble figuring out who I should switch to to save money. A combined plan? I'm in Melbourne if that's relevant.

If there's a list somewhere that I've missed, just point me there and I'll delete this.