I went with the Electric Brewing Supply (
50amp/double batching) panel when it came time to get a single panel to control my electric kettles. This is their new design, which includes provisions for a steam condenser lid pump. It also has controls for two March/Chugger type pumps (wort and water). I went with the 50amp version for when I want to do a double batch. IIRC, you can get the same panel setup for a single batching (single element powered at a time, 30amp needed) if you want.
Personally, I'm glad I went with this panel. It's easy to use, well laid out and just works. IMO, if you ever think you'll want to double batch, or have the BK and HLT elements running at the same time, get the 50amp panel. I like having the additional capability for when I want to use it than have to monkey around with things later to make such a setup work. "Better to have and not need, then need and not have."