I don’t know just how long, how frequent the OP rides or if the OP had a significant break from riding over the Winter but (
) in my experience, the first few weeks of MY riding season do leave my bottom a bit sore. RE: saddles, they are very much a matter of personal choice and can involve more than a little bit of trialing the wide variety of available saddles. I will say and many will agree that once a person develops a “callus” on their sit bones (arse bones, if you insist), riding will be way more comfortable even on different bikes as long as the saddles have similar dimensions.