As a former supe, what will the company let you do? I don't know. Is it the same as hourly? Finding that answer is kinda gonna determine what you do. But say they'll let you stay there. As a 2-yr retiree (grunt) I chose to leave mine in Prudential, they same as when I was working. Why?
My financial guy wanted me to roll it over to something he had. He swore he could do better. I got out statements and in print was expense ratio. I forget what it was now, I could look it up, but he was stunned. He said he COULD NOT do better than this and to leave it there.
This last statement, I earned between 17-20% on all funds I divested in. Sure, I'll hafta pay tax on that when I absolutely have to but it will be a lower tax because of being in lower tax bracket than when I was working, about 15% compared to 35%.
My Roths? Earning about the same. The diff here, of course, is that you don't pay taxes on earnings when you withdraw. Now, do you want to pay penalty for withdrawing 401 just to put it in Roth? Your choice, I guess. This is just what I did and it's working.