Need helping narrowing down a laptop


Jul 6, 2016
I'm going to be using the laptop for gaming, autoCAD, and Civil 3d, along with movies and the general stuff. I've got it narrowed down to these 3 I think:

Asus K501UX-NS51 ~ 679.99 usd
Core i5 6200u
8gb ram
Nvidia gtx 950m 2gb
1tb hdd and 128gb ssd

Asus X550JX-DB71 (Refurbished) ~ 679.99usd
Core i7 4720HQ
8gb ram
Nvidia gtx 950m 2gb
1tb hdd

Acer Aspire E E5-574G-75N8 ~ 569.99usd
Core i7 6500u
8gb ram
Nvidia 940m 2gb
1tb hdd

Does anyone have any experience with refurbished laptops as that scares me a bit and whether the quad core processor will be noticeable or worth it compared to no SSD.

Appreciate the help, thanks
(If you need any other details just ask)