I have the wills on my 40 gallon. It is a beast on that tank. If I had a complaint, it doesn't have a dusk or dawn setting, but for a budget light can't go wrong.
I like the daisy chain feature that wills has
But I also kike the dimmer on and off feature to hta via spectra has also. With the wells I can just hook it up to my apex and program it from there.