I’m new here, this is my second visit to the website. I also loved Sierra games… I just love the quests, in fact my life has become a quest. I guess and I’m a seeker by nature.
Have you tried the re-edition of Gabriel Knight 1? I just downloaded yesterday, I’m going to test it today. You can find it here: http://store.postudios.com/collections/games/products/gabriel-knight-sins-of-the-fathers-20th-anniversary-edition