Thanks Danny Michael for pointing me back to szboardstretcher's reply and to szboardstretcher, pardon me for missing your point.
I started playing with Linux with RedHat 5.something. And then 6.something. Had no idea really what I was doing. But I was learning. By 7.2 I had a working file (Samba) and print server going. 8.0 really impressed me. My "server" was a home made Athlon PC. The no-name system board died. I had a second home made Athlon PC so I put all the parts in a pile and built a new "server" with the faster server from the original server, the mother board from the second PC complete with onboard NIC, a video card from somewhere etc. I put the hard drive from the "server" into this mess and booted it up. Anaconda said "can't find that hardware... deleting it" "found new hardware... installing it" until it had sorted out the new machine. I rebooted and my Samba and print server was back on my LAN! I played with 9 and Enterprise Workstation I think it was called. Then I started on the Fedora path up to about 4 or 5.
I stumbled across an Ubuntu 6.something iso on Usenet. Why it was posted to Usenet I have no idea. I had never heard of Ubuntu but I had a look. I learned that Dell was shipping it on some of their PCs. I installed it on a test PC and gave it a test. I plugged in a flash drive containing some MS Office files and some multi-media files. Word and Excel files of course opened in Open Office just fine. I clicked on an mp3. "No program available to open this file" same as on the Hat side. However, Ubuntu did not tell me to contact my administrator. Rather it asked if I would like to find a program? It presented me a list rated 1 to 5 stars. I chose a 5 star program and my mp3 began to play. Same with the video files. I was impressed!!!
I started using Ubuntu 7.2 about half and half with XP. By 8.04 LTS I was using Linux pretty much full time. I purchased a new PC in 2009. Unfortunately 8.04 would not recognize the newer hardware. I ended up running 9.10. When 10.04 LTS came out I decided to install it. Unfortunately my two monitor "separate X screens" configuration from 9.10 would not work. It did work on CentOS 6 and that is why I am running CentOS. Of course my separate X screens are problematic on CentOS 7 - worked reasonably well a year ago at ~7.1. The current 7.3 NOPE.
My CentOS 7 plan B is to have CentOS 7 on the PC and a CentOS 7 guest running in VMWare on the second monitor. It will be configured to always be on the visible workspace. This will allow me to flip between workspaces on the host and not loose sight of the VM which will be primarily email and browser - same as my current second monitor. I will of course have multiple workspaces on the VM if needed and the file systems on the host will be tied to the guest with nfs and autofs. I have all this running on a test PC and am in the process of putting it all together on my new Dell Precision Workstation.
As to Gnome 3... I can not tolerate it. Probably because I cannot figure it out. I want my OS to support the programs I wish to run and do work with. I do not want the OS interface to be a major undertaking in and of itself. Then gnome panel is the biggest improvement in user interface since the quick launch thing on XP. I had XP bottom bar two rows high with about a dozen most commonly used programs in quick launch. The Mate desktop derived from Gnome 2 is SIMPLE and good enough for me.
As far as a file manager... I do not think anything can match File Manager (aka winfile) from Windows NT. The one on Win 9.x was crap but the version on NT handled long file names, permissions etc. I could do a heck of a lot from the keyboard. Rarely needed to touch the mouse. I used it on XP for many years and even found a port of it for Windows 7. On Linux I use gnome-commander. The version on CentOS 6 is somewhat dated so it is a bit of a re-learning curve to the CentOS 7 version. I guess I am used to the old foibles
As to Fedora... it changes too much - by design. I like stability and CentOS gives me that. And back to Ubuntu... even 16.04 will not support separate X screens.
Ken
p.s. I should be running a blog