Help with trailer frame

I had a question come into the Teardroptrailers.org site from a guy wanting to learn more about the actual trailer part of a build. He has looked around here, but still needs a little help
"I am contemplating building a teardop trailer for our use in retirement, approximately 5+ years away. My biggest concern is where to buy a trailer to start. The Harbor freight and Tractor supply trailers don't impress me much, primarily due to past experiences with both companies but also due to a desire to make a 5' wide tear that would be about 5' high. I'd appreciate any recommendations that you might have also..."
Would one of you like to talk to him? I can give him your email. Seems like a nice guy, said thank you and everything
Thanks
-mb
"I am contemplating building a teardop trailer for our use in retirement, approximately 5+ years away. My biggest concern is where to buy a trailer to start. The Harbor freight and Tractor supply trailers don't impress me much, primarily due to past experiences with both companies but also due to a desire to make a 5' wide tear that would be about 5' high. I'd appreciate any recommendations that you might have also..."
Would one of you like to talk to him? I can give him your email. Seems like a nice guy, said thank you and everything

Thanks
-mb