Always been a fan of the Indy cast covers w/o their logo on them. I milled the logo off of mine.
The ones from Summit looks just like the Indy covers, so I'd try them.
I also like the old school M/T and Cal Custom covers...have a pair of each hanging on the wall to use on something in the future possibly.

Never been a fan of the fabricated valve covers personally. They look cheap to me for some reason, even though the good ones are pricy.

Here's a pic of the Indy covers after milling off the logo...