Recommendations for year-round hiking bag

Hi everyone, I want to get a dedicated backpack for hiking/outdoors. I would like to use the bag for day hikes throughout the year on mountains and in forests. I don't think I will go on extreme hikes, climbing or trail-running. Since I am also planning on using it in winter, I want to place the following items inside:

  • rain poncho
  • fleece jacket
  • first aid kit
  • sunglasses+sunscreen
  • map
  • potentially hiking poles
  • water bottle
  • snacks

After making the list above, I though that approx 25L should be enough with some extra space and shortlisted the following:

Deuter and specifically the Futura line seems to be getting a good rep, so I looked into the brand. Decathlon seems to also get a good rep. The prices are comparable, so that won't be a deciding factor. For me, personally, comfort is priority number one; I wouldn't want to have back pain at the end of a hike. All these backpacks seem to be similar, so I wanted to reach out to the community and ask for your experience and advice.

I would really appreciate your feedback! Thanks a lot in advance.