Small departments can be ok if with the right bosses. If the 2-4 pilots get along and really care about the operation it can be a great life.
People often ask these general questions and think Fortune 123 or the big name/plane is best. Not often the truth. People confuse Bill Gates with Microsoft and Steve Jobs with Apple from Fred Smith with Fedex and Sam Walton with Walmart---principle owned aircraft vs. a big corporate structure. Best short term pay is probably better on the principle aircraft, longer term pay and benefits better with the corporations.
You really have to nail down what you are looking for.....The people with the best jobs in personal departments probably don't talk about it too much though.....