I have an all-aluminum trailer and I like it, but I would agree that cheap aluminum trailers may not be the thing.
When I went to look at Keifer-Built trailers before, I wasn’t impressed… just didn’t have the solid feel that the 4-star did.
You might try calling Heacock Trailers in Glendale. They build their own, and they get used in on consignment. Not flashy, but they seem solid, and they’re not pricey. They may have something that will work for you.