Whilst headline Go rate is tempting, personal real world charging numbers may help you decide whether you want to jump early.
We have a second source for charging and its probably 50/50 remote/home charging, slightly more bias to remote charging now on Go - remote we just plug and leave, Go we have to 'clock watch'.
For us, we do 10A charging so need multiple home charges a week to keep within the 4 hour slot, where as when not on Go, we just plugged it in once per week and left it on as required.
We recently changed to Go (long term Octopus customer) so have lots of real world costs, but not so many on Go.
Cost wise (on top of charging elsewhere)
Octopus variable, approx £4-5 once per week ~ 40%
Octopus Go, approx £1.80 spread over a few charges per week (we topup by % so not exact end time) ~33% total
So in our situation, Go seems to give us a saving of around £3 per week. Approx 1k miles per month.