I'll have to count up my SE cases and see what brands I've got. I get them for no more than $4 from Amazon using Slickdeals codes.
For my 6SPlus I've been using the Apple Silicone case. I have other that's the one I keep on it. I only rotate cases for my SE. Right now it's got a Ringke case on it with port covers. My favorite one so far is a Caseology Envoy Leather Cherry Oak. A lot of the cases I have are weird Asian off brands. One of them works very well. It's a Pusheen cat knockoff in a thin but well made plastic shell.
For my 6SPlus I've been using the Apple Silicone case. I have other that's the one I keep on it. I only rotate cases for my SE. Right now it's got a Ringke case on it with port covers. My favorite one so far is a Caseology Envoy Leather Cherry Oak. A lot of the cases I have are weird Asian off brands. One of them works very well. It's a Pusheen cat knockoff in a thin but well made plastic shell.