Both of those link to third-party sellers I do not recognize. I think it would be better to go with the official comgrow store. Slightly more expensive, but you know what you are getting. $339.15

https://www.amazon.com/Upgrade-Creality-Upgraded-Extruder-Capricorn/dp/B081SPJ2VX/

Edit: And it normally goes for $399, so it's a savings of ~$60.

Mine came with the aluminum extruder and Capricorn tubing. I think I have the springs already as well -- this is my model: https://www.amazon.com/gp/product/B081SPJ2VX/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I have a glass bed already coming. I'm hoping that it clears up my leveling. No matter what I always have one spot that doesn't seem to level right. Maybe it has a slight bow to it?