Purchase advice scooter for motorcycle replacement

Hi, at the moment there is still a GasGas sm700, which I would like to sell. Consideration is a scooter, because comfortable, suitable for everyday use and more comfort. I heard the 350 ADV from Honda consumes relatively much, since the consideration is to fetch a 750. Do you know how far the two differ from the maintenance or how expensive the maintenance is in comparison with the 750s? A 125 should be the most economical, but it would be too slow for me to believe. I am open to suggestions! Thank you!