Sub-frame connectors... Please build them correctly!

Oh no. Engineers?






Here's the problem: Someone used the word "correctly".
That opens Pandora's Box. And then she spreads her legs.
(Same problem with the word "best").
Does anyone have a rotisserie that I can borrow to do it the "best" way?
All welding should ideally done down. My pans would have to be tied from the top to be best.
Does anyone weld up by choice?
I used Auto Rust Technicians connectors. They were good but they lacked flanges.
Eye Ball Engineering told me that they would be "better" with flanges like these to spread the load.
(spread the legs?)