Assuming you are in the UK, I would use Esso Synergy Supreme+ 99 which actually contains no ethanol (in most of the UK), so will last longer in the tank if bike unused, also more detergent to keep things clean. For the extra cash the amount used is pretty trivial. I use it on all my motorbikes and chainsaw and have no probs with it going gunky.
https://www.esso.co.uk/en-gb/fuels/petrol