I’m a Ventura native, now in San Diego, and miss it terribly.
Based on what you’ve posted, I’m guessing: single, 30ish, and a new Amgen employee? Here are some thoughts:
Ventura is a great town, population 100k, but a little quiet if you are single. It is great if you have a family or really love surfing (esp long board). Or if you love the outdoors, most of Ventura County is National Forest.
Thousand Oaks / Newbury Park / Westlake are very nice and have more going on if you are single. Plus, it’s an easy shot to LA for a night out. The UCLA chancellor lived in TO for years, and commuted.
Avoid Oxnard and Port Hueneme. Camarillo has few redeeming qualities.