Last year I went from 46/15 all the way to /18 and thought /17 is a good gear.
Though, for the winter I had /18 for more strength and ease to get through all the muck on the roads. That helped a lot. So much, that when I put back on my skinny tyres, /16 was much easier to tackle than /17 from last summer.
In the end of the day, all gears are good. It's just up to you whether you're up for it or not. Cogs aren't that pricey either to experiment with too.
Last year I went from 46/15 all the way to /18 and thought /17 is a good gear.
Though, for the winter I had /18 for more strength and ease to get through all the muck on the roads. That helped a lot. So much, that when I put back on my skinny tyres, /16 was much easier to tackle than /17 from last summer.
In the end of the day, all gears are good. It's just up to you whether you're up for it or not. Cogs aren't that pricey either to experiment with too.