x1 4th Generation with Windows 7 or 5th generation with Windows 10

I can buy either a carbon x1 4th Generation with Windows 7 or 5th generation with Windows 10 for the same price. I generally would go with the newer machine however I really like Window 7 and have heard iffy things about the windows 10 interface. Is there much of a difference between 4th and 5th generation? What would you do?

These are the specs for the 5th generation:
Processor : Intel Core i5-7200U Processor (3MB Cache, up to 3.1Ghz)
Operating System : Windows 10 Home 64
Operating System Language : Windows 10 Home 64 English
Display : 14.0" FHD (1920x1080) IPS Anti-Glare Non-Touch
Memory : 8GB LPDDR3 1866
Graphics : Intel HD Graphics 620
Body Color : Black
Keyboard : ThinkPad Backlit Keyboard English with Finger Print Reader and C-cover, Black
Security Features : Integrated Fingerprint Reader
TPM Setting : Hardware dTPM2.0 Enabled
Camera : 720p HD Camera with MIC
Security Chip : Hardware dTPM
Hard Drive : 128GB Solid State Drive, SATA3
Pointing Device : UltraNav (TrackPoint and ClickPad)
Battery : 3cell Battery 57Wh
Power Cord : 65W AC Adapter (2pin) - US (USB Type C)
Wireless : Intel Dual Band Wireless AC(2x2) 8265, Bluetooth Version 4.1
Integrated Wireless Antenna : WLAN antenna
Display Panel : 14.0" FHD (1920x1080) IPS, Anti-Glare, non-Touch, 720p HD Camera, Black

These for the 4th:
Processor : Intel Core i5-6200U Processor (3MB Cache, up to 2.80GHz)
Operating System : Windows 7 Professional 64 preinstalled through downgrade rights in Windows 10 Pro
Operating System Language : Windows 7 Professional 64 preinstalled through downgrade rights in Windows 10 Pro English
Recovery Media : Windows 10 Pro 64 Coupon Worldwide
Display : 14.0 FHD(1920x1080) IPS Non-Touch
Memory : 8GB LPDDR3 SDRAM 1866MHz
Graphics : Intel HD Graphics 520
Keyboard : Keyboard Backlit - English
Security Features : Integrated Fingerprint Reader
TPM Setting : Hardware dTPM Enabled
Camera : 720p HD Camera with Microphone
Security Chip : Software TPM & Hardware dTPM
Hard Drive : 180GB Solid State Drive, SATA3 OPAL2.0 - Capable
Pointing Device : UltraNav (TrackPoint and ClickPad)
Battery : 4 Cell Li-Polymer Battery 52Wh
Power Cord : 65W AC Adapter - US(2pin)
Wireless : Intel Dual Band Wireless-AC 8260, 2x2, Bluetooth 4.1, no vPro
WWAN selection : WWAN
Integrated Mobile Broadband : Integrated Mobile Broadband upgradable
Display Panel : 14.0" FHD (1920 x 1080) IPS,No Touch,No WiGig,WWAN