I have an Eaton sub panel for my system via a Square D main. As long as your not using an Fed Pacific you should be fine. Just insist on an EMP Shield while he's there.
Experience With Cutler Hammer (Eaton) CH Series Panels
I am in the midst of new construction and am working with an electrician who is recommending a Cutler Hammer (Eaton) CH series 400 amp panel. He prefers these to Square D panels. The CH series panels have "one-piece silver flash plated copper bus provides superior conductivity throughout the entire product line". I will be running multiple dedicated circuits for audio rooms and am wondering if anyone has an opinion on these panels.