These are genuinely excellent aesthetic improvements, and the weight penalty is almost nonexistent compared to 18ga wire. Add a single LED to supplement, and $10 sets you up with awesome visibility on all axes.
I really only got these so that I could run motors with trimmed wires for on-arm ESC mounting, and I've fallen for the raw simplicity of cheap 4-in-1 ESCs.
Instead, I've found that these look so awesome, I won't build without them.
For maximum awesome racing build, I'd run a set of these all on the bottom, add a PHX3D canopy in plain white Taulman nylon, and supplement with a Tiny's single bright VBAT LED hot glued to the canopy - super bright and easy to spot at night, with a grand total of 6g weight penalty, and looks absolutely phenomenal everywhere.
Reviewed by: (Verified Buyer) Destroyer Dan from Abq, NM.