In my post-college working career I've experienced 3 different employers - two of them being in the investments/financial services industry. I'd say all leave something to be desired when it comes to 401k plan selection.

My understanding is that it is less about the provider and more about the fund selections the board makes, and surprisingly the boards of these financial firms haven't made the best selections in my opinion. I have no idea if there is a different fee structure based on selection but the best of the 401k plans I ever experienced - hint it's not the current one - had more index funds (cheaper) than managed funds (more expensive) and the index fund options were essentially by style class e.g.) small-cap value, small-cap growth, large-cap value, large-cap growth, a money market fund, an investment grade bond fund etc.