I would most definitely use “Transfer with Sound Restoration”. 30-year old recordings, even when sealed, have many imperfections that can be eliminated or considerably reduced by our Sound Restoration process. There is also the “Both Versions” options. Most people in your situation (with your dilemma) order Both Versions. That way they will get both; a CD that sounds EXACTLY the same as the vinyl record, and a CD with Sound Restoration.
"Just a quick note to say you did a great job converting my tape to cd. Plays great. Thank you,"