good. of course two would be better, but when testing new tires or sizes, better to buy one and see how it works. forums tend to shout about some Fab tire, and it may be so. the downside of course is that it may be worse than what you were using. happened to me, so now i test and see.

wider tires on the front works for me, went from 25mm to 35mm front tire on my touring bicycle and now a world of difference in comfort. changed the back from 25mm to 32mm because that was what was on the shelf. i like to use up all my tires in a logical way. for short trips i don't mind using my road bike with 25mm tires, but eventually even that may change.

As everyone knows by now... Is 25 pumped up to about 100PSI. 😃

What's the optimal road width for maximum speed on tires?

There is more to comfort and handling than just tire width. True, going up a size in just about any tire will allow you to run less pressure and give a bit of road vibration reduction, but the construction of the tire is just as important. A supple sidewall and good design can make one 25mm tire ride much better than an inferior tire of the same width. I run Bontrager AW3 Hardcase Lites and am very happy. I used to use Bontrager H4 Eco (no longer in production) on my hybrid mutt. They were decent utilitarian tires for mixed surface riding but had nowhere near the comfort and handling qualities of the AW3s. Even your rim width makes a difference in the profile and volume of the tire. My first road bike was a 1990s Trek 1500 with some of the narrowest rims I have ever encountered. The bike was designed for 23mm or less tires and, with it's early aluminum frame, could render your hands completely numb within minutes, even on relatively smooth roads. Squirrely was an understatement on anything less than perfect roads. I'm much faster on my current, cro-mo framed road bike, thanks in great part to better handling and more confidence from better and wider tires and rims.