CNN.com had an article on the best 401(k) plan providers which I found on a Google search for 401(k) plans.
All I can say is this was a list developed by someone who never sponsored a 401(k) plan or worked on one. It was geared towards large providers, some good ones (Empower and Fidelity) and some bad ones (one of those payroll companies). If you’re a large plan, the list wasn’t bad. If you’re a small plan, many of these providers won’t give you the time of day.
When speaking about cars, I ask my mechanic, Ralph. If I had a 401(k) plan provider question, I’d ask an advisor or somebody else in the business.