My diary has just alerted me that i'm just into final month of my Spark contract, so i'm good to switch to BigPipe :-)
I assume that I need to give 30 days notice, so it will make sense for me to sign up for BigPipe with a start date after the end of my contract and then notify Spark now of my change over date? (I just want to ensure I don't pay for an extra month or get pinged for a $199 early termination fee!).