What makes an eye piece great? Green writing around the eyepiece of course.
Just kidding.
Wide field, multi element eyepieces like Ethos aren't the best for planetary viewing. They are very good, but simpler 3 and 4 element eyepieces are favoured for dedicated planet stuff. And the TV Plossls are often referred to as the best eyepiece for observing Jupiter, because it's warm tone brings out surface details the best.
Personally, I think the Ethos is one of the best DSO eyepieces. They do take a little practice to figure out the best way to see the whole field of view. But it's worth the effort for the view you will get out of them.
Ethos are very well corrected and handle short f-ratio scopes ok.