My experience with Seikos are they just are not accurate unless you get lucky or you get it regulated. For actually using the watch as a time telling device they are not ideal. My regulated seiko is reasonable but my cheap Swiss powematic 80s have been astoundingly accurate and more affordable per spec compared to seiko. Honestly seiko is a fun but not serious brand for me because I prioritize time telling in an auto. I wear Seikos on vacation etc but wouldn’t use it as a primary watch as going several weeks will require occasional adjustment which none of my Swiss watches require over that period of time

Longines or Hamilton are perfect options from excellent brands