I am the author of the most recent review of this program on scut work, and I stand by that review. The only things that have changed since I wrote it are that overnight call is being brought back for interns on some rotations. In terms of competitiveness, what do you mean?
Is it selective of applicants? Yes, we don't go too far down on our rank list, and we have matriculants from all over the country (and world, because of our global health pathway.) It's not a slam dunk that you'll get in, but if you're a decent student with good LORs and you decide you really want to go here, you can probably make it happen.
Is it a good place to receive training and go on to competitive fellowships? We send graduates to fellowships around the country, though most stay in MN. Research opportunities are probably the same as any academic medical center. We are not listed in the top 10-20 for most specialties in US News, etc, but we do have solid teaching and research in the more competitive supspecialties. If you want to end up in cards or GI fellowship in NY or Boston FOR SURE, though, it's probably safer to go to a well respected program in one of those cities.
The atmosphere between / amongst residents is NOT competitive - there is a lot of camraderie.