Upgrading from Tent trailer to TT. Input on brands

I believe Keystone is using Lippert frames, I think the Creekside uses the same frame as Northwood. I run RV tours down into Mexico, the land of Topes (speed bumps) I have seen more than one cracked Lippert frame. Enough to think they have an issue. Crawl under both choices and compare. What is under there is more important than the layout.