So after running the default 8.0 that came with the iPhone 6 for a few days (the 8.0.2 release was out) I decided to go with 8.0.2. The only issue that I faced yesterday was that the Wi-Fi would drop out after about a few hours of being connected. And once it would disconnect, no amount of toggling the Wi-Fi selection would resolve it. The only solution would be to reboot the device, and then this issue would come up again after 6-8 hours. Finally I did a Reset of the Network Settings and rebooted the phone. Post that, it's been 24 hours and no issues. Note - You'll have to reconfigure all the Wi-Fi networks that the device is familiar with, so ensure you have all the pass keys. Hope this helps others!