I live in Logan. I really like it for the most part. It's beautiful with a lot of outdoor recreation, a lot of kid activities, and very safe (reading the Logan police blotter can be amusing).
Negatives - in the winter, we get inversions where the cold, polluted air gets trapped in the valley. It's gross and worrisome. If you go up the canyon to the little local ski resort, it's beautiful and sunny and you can escape the inversion, but unfortunately, we can't do that everyday during an inversion. It's pretty Mormon and conservative. Not a lot of nightlife type thing in Logan.
We are not Mormon but have met a great group of people who are transplants like we are (many USU related). I'm not entirely sure what it will be like for non-LDS children to be raised here as they get older. I've heard mixed stories. But it's so safe here with so much outdoor rec that if learning how to be a religious minority is the worst thing that our kids will have to deal with, then maybe that isn't so bad. What department are you looking at?