They don't fix anything, they just arrange a taxi to get you home, to a station or lbs.
I know that. My point was about how long it would take them to reach you. If you can learn how to perform minor roadside repairs yourself, in most cases, you'll be on your way again before the rescue service has a chance to get to you, with the added benefit of not having your ride curtailed. It may not be fun changing a tyre in the cold and wet, but it's no fun standing around in the cold and wet waiting for a taxi either.
In any case, to get back on topic, it's a moot point if the OP fits Durano Plus because he won't be getting any punctures. And that's a fact.
Size-wise, I think some people are overstating the difference between 23 and 25 in terms of comfort, but it is true that Duranos tend to come up larger than advertised, so if your frame only has clearance for 25mm tyres, they might be a tight squeeze (I went from 25 back to 23 on my bike because there wasn't room to fit the RoadRacer mudguards with 25s, and tbh, I don't notice a huge amount of difference - Durano Plus are not the most supple tyre anyway and even in 25 are relatively uncomfortable compared to many other tyres at the same size). For a really noticeable step up in plushness, go to 28 if your bike can take them - and current thinking is that rolling resistance is actually improved with a larger volume tyre, for various scientific reasons that will probably be debunked in a few years time...