Make sure you're comitted if you're switching to Kogan mobile. A colleague of mine has been waiting 2 weeks to get her number ported.
She's getting the Ombudsman on to it now.

Personally I'm with Telstra, rolled in the Foxtel + cable internet. It's ok, I mean at some point in your customer lifecycle you will have difficulty with your provider.
I've worked for different Telco's and been a customer of different Telco's - just seems to be part of the experience.
Telco + Banking are a right PITA but you can't live without them.