Which of these PCs is better? PLEASE HELP!

Solution
They all have some benefits, none of them are ideal, older for any newer demanding games. For something like CS GO, WOW On low-mid settings, LOL, Diablo 3, they are fine.

If you really do not want to build your own, I'd probably bet the middle link with the i5-660, $330/BO, offer $250 and see what happens, it's worth about that much with 4 GB of RAM, then get another 4 GB of RAM for it.

Make sure you get the Windows setup key that was used, the Windows 10 setup would be tied to their MS account, so you would need the license key if you need to re-install it without that, or you will need to buy a new copy of Windows.
None of them are good.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G4400 3.3GHz Dual-Core Processor ($56.95 @ OutletPC)
Motherboard: Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard ($46.98 @ Newegg)
Memory: Kingston FURY 8GB (1 x 8GB) DDR4-2133 Memory ($34.98 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($45.88 @ OutletPC)
Video Card: Asus GeForce GTX 950 75W 2GB Video Card ($113.98 @ Newegg)
Case: Xion XON-310_BK MicroATX Mid Tower Case ($21.98 @ Newegg)
Power Supply: EVGA 500W 80+ Bronze Certified ATX Power Supply ($32.99 @ Newegg)
Total: $353.74
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-09-21 03:36 EDT-0400

This would be alot better.
 
They all have some benefits, none of them are ideal, older for any newer demanding games. For something like CS GO, WOW On low-mid settings, LOL, Diablo 3, they are fine.

If you really do not want to build your own, I'd probably bet the middle link with the i5-660, $330/BO, offer $250 and see what happens, it's worth about that much with 4 GB of RAM, then get another 4 GB of RAM for it.

Make sure you get the Windows setup key that was used, the Windows 10 setup would be tied to their MS account, so you would need the license key if you need to re-install it without that, or you will need to buy a new copy of Windows.
 
Solution