I haven't used it heavily but I mean they're off to a great start at the least.I'm still seeing ads using Edge. That's really the only reason why I'm still using Chrome.
It sounds like you need a multi monitor setup lolDee,
The majority of my Win 7 stuff (and by majority, I mean everything except for freaking Norton) works perfectly for W10.
Before upgrading, the W10 installer will give you a list of programs(or Apps, as they're calling them now) that do not or may not work on W10.
Everything is much faster and there is a multi-desktop function that I think helps A LOT with productivity. I actually have 10 desktops up right now for my web development, lol.