It's taken me a few days to start using it to see how it works out.
I had plans to carry both my Lumia 640 and my new Honor 5X for a while until I could get adjusted. That lasted all of about an hour. Replacing all the apps was easy (duh!) except for MyTube. Finding out you can't edit contacts with Outlook was NOT a good thing. I'm using Outlook as my contacts on the phone, and keep it synced with my laptop. I have to edit things on my laptop, though, and let them show up from there. I can make a new contact, but have to do it through the phone's contacts and not outlook. Outlook will sync it, but not all fields are available. Some of the fields I use I can't set up without the laptop.
LOVE the fingerprint sensor.
The only thing I'm still using my 640 for is for the morning alarm clock. I have nowhere to be, but my wife has to be at work at a specified time. The 640 has proven reliable over the years, and I always have to have a few days to test a new phone before I will declare it reliable. That means setting up 2 alarms at once, but I'll wait for the weekend to do that. I may be boxing up my 640 very, very soon. The 5" screen just seems so small after working with a higher resolution 5.5" screen all day.
OneDrive works great for uploading photos as I take them. MS Office apps are great. However, Groove music stinks on Android. It lacks so many features that I need, mainly being able to locate and play music from the SD card. I don't subscribe to the Groove Music service, and I don't stream my music from OneDrive. That seems to be all Groove is capable of on Android.
Still have some basic setup that needs to be done, but life has been busy, and it's hard to concentrate while taking care of a family, having two young children at home with me, taking pain meds for my freshly sprained knee, being in pain even with the meds, etc. Yes, I'm a 53 year old man that had a foot race with my 7 year old daughter. I went down and sprained my knee pretty badly. I won't be walking without assistance of a cane and a lot of pain for a while. On the bright side, it gives me slightly more down-time to figure out the phone, if I can forego the pain meds for the concentration power.