I have been running Windows 10 (insider technical review) since about
February.
Personally I like it, but than my computer is only about 1-1/2 years old
so it is a fairly updated (or at least it was when I bought it last year).
In my household I am usually the LAST person to do update to new OS
but this time I had it long (2-1/2 months) before my hubs.
I have not had any problems or conflicts with any program I have installed
on my computer. However I am still waiting to be able to get it installed on
my laptop and netbook.