vitalsam1k

Make sure you use www.pcpartpicker.com

The main differences I can find are,
Carbon: 
2 x PCIe 2.0 x1 slots
8 x SATA 6Gb/s ports*
Realtek ALC1220     
Intel i211AT     
Pro:
3 x PCIe 2.0 x1 slots 
6 x SATA 6Gb/s 
Realtek ALC892 
Realtek 8111H 
 
The difference is more slots and audio

Welp thanks for telling me, now I know

The survey makes no sense... M.2 is a form factor, NVMe is a bus used for transferring data.
 
You can have an NVMe M.2 SSD, an NVMe U.2 SSD, and an M.2 SATA SSD... SO to summarize, M.2 and NVMe are not mutually exclusive.
 
Now I'm frustrated and sad.

PCPartPicker Part List Type Item Price CPU Intel - Core i7-8700K 3.7 GHz 6-Core Processor $349.99 @ Walmart CPU Cooler CRYORIG - R1 Ultimate 76 CFM CPU Cooler $99.89 @ OutletPC Motherboard Gigabyte - Z390 AORUS ULTRA ATX LGA1151 Motherboard $229.99 @ Amazon Memory GeIL - EVO POTENZA 16 GB (2 x 8 GB) DDR4-3000 Memory $64.99 @ Newegg Storage Samsung - 860 Evo 500 GB 2.5" Solid State Drive $77.99 @ Amazon Video Card Zotac - GeForce RTX 2080 Ti 11 GB Twin Video Card $1049.00 @ Amazon Case Corsair - SPEC OMEGA ATX Mid Tower Case $59.90 @ Amazon Power Supply EVGA - SuperNOVA G3 650 W 80+ Gold Certified Fully Modular ATX Power Supply $95.88 @ OutletPC Monitor VIOTEK - GN27C2 27.0" 1920x1080 144 Hz Monitor $199.98 @ Amazon   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $2247.61   Mail-in rebates -$20.00   Total $2227.61   Generated by PCPartPicker 2019-06-04 23:46 EDT-0400    I added the motherboard you told me to add and found a monitor what do you think

PCPartPicker Part List Type Item Price CPU Intel - Core i7-8700K 3.7 GHz 6-Core Processor $349.99 @ Walmart CPU Cooler CRYORIG - R1 Ultimate 76 CFM CPU Cooler $99.89 @ OutletPC Motherboard MSI - Z370 GAMING M5 ATX LGA1151 Motherboard $298.89 @ OutletPC Memory GeIL - EVO POTENZA 16 GB (2 x 8 GB) DDR4-3000 Memory $64.99 @ Newegg Storage Samsung - 860 Evo 500 GB 2.5" Solid State Drive $77.99 @ Amazon Video Card Zotac - GeForce RTX 2080 Ti 11 GB Twin Video Card $1049.00 @ Amazon Case Corsair - SPEC OMEGA ATX Mid Tower Case $59.90 @ Amazon Power Supply EVGA - SuperNOVA G3 650 W 80+ Gold Certified Fully Modular ATX Power Supply $95.88 @ OutletPC   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $2116.53   Mail-in rebates -$20.00   Total $2096.53   Generated by PCPartPicker 2019-06-04 23:27 EDT-0400   Is that better?

It's an unlocked CPU so it's overclockable from 3.7 to 4.7 https://pcpartpicker.com/product/sxDzK8/intel-core-i7-8700k-37ghz-6-core-processor-bx80684i78700k

PCPartPicker Part List Type Item Price CPU Intel - Core i7-8700K 3.7 GHz 6-Core Processor $349.99 @ Walmart CPU Cooler CRYORIG - R1 Ultimate 76 CFM CPU Cooler $99.89 @ OutletPC Motherboard MSI - Z390-A PRO ATX LGA1151 Motherboard $129.89 @ OutletPC Memory GeIL - EVO POTENZA 16 GB (2 x 8 GB) DDR4-3000 Memory $64.99 @ Newegg Storage Samsung - 860 Evo 500 GB 2.5" Solid State Drive $77.99 @ Amazon Video Card Gigabyte - Radeon RX 570 4 GB Gaming 4G Video Card $119.99 @ Newegg Case Corsair - SPEC OMEGA ATX Mid Tower Case $59.90 @ Amazon Power Supply EVGA - SuperNOVA G3 650 W 80+ Gold Certified Fully-Modular ATX Power Supply $95.88 @ OutletPC   Prices include shipping, taxes, rebates, and discounts     Total  $1058.52         Generated by PCPartPicker 2019-06-04 23:00 EDT-0400   Is that good enough for you?