CR-10 Frame Brace / Bracket Stability

To brace or not to brace?

I haven't had any problems, that I know of, printing tall prints (but don't print many), but see all these brackets / solutions to making the frame more ridged. I stumbled on this thing and thought about printing the triangle part of it for a quick / easy additional support. Then I started to wonder "is it worth printing this or should I just drill some holes in a metal shelf bracket and use that?

So, will adding a bracket (the triangle pice) make much difference, and if so, should I print this one or make one out of metal?

https://www.thingiverse.com/thing:2123233/comments

 

I printed the same frame out and installed it, but for the life of me I couldn’t see any difference in my prints when using it, so I removed it and I still can’t see any difference, now I know I don’t need the Friggin thing to get good prints in the first place...

click to enlarge.

 

Yeah, I'm not sure it would make much of a difference, and I don't print very tall prints anyway.

I'm very much not inclined to add the huge rods / brackets, but thought the one bracket that is out-of-the-way might not hurt... but now I'm even debating if that's worth it.