I have installed W10 on four machines now, three by choice (working PC's) and the fourth (Games) I was reluctantly pushed into it by circumstance (lost my O/S HD and only have an old W7 disk and couldn't face all the updates so thought just as well YOLO on W10).

W10 installation was a breeze on all four, that's three upgraded and the fourth clean install. Absolute breeze and the best O/S install experience to date for me and I go back to MS-DOS.

W10 is clean & crisp and seems to get all the little things right where they have not come up to par in the past. Hot swapping memory sticks and portable drives for example is a joy now - it's fast and just feels totally reliable (at last). Not a major thing for sure, but W10 seems to get all of these past niggly little things right and that makes the whole user experience a pleasant one. It is not without bugs though but luckily they also tend to be little ones. So, for home based "working only" machines I'd certainly recommend the upgrade now as it just seems more efficient at pretty much everything and your work day will be slightly more pleasant IMO.

That said, for Gaming focused PC's I recommend waiting a few more months before taking the plunge, to allow for software compatibility updates and the remaining bugs to be squashed. To be fair, the only (major) issue I have had so far is forced Nvidia drivers that crashed the system but there is nothing more frustrating than that when you have a great working games PC before it's pulled away from you by a forced update. You can fix this but I sincerely hope MS stop forcing these GPU driver updates. GPU drivers are fickle things, so please MS let us choose when to install/update them on our gaming PC's.

In short: For a mostly "work related" PC I'd definitely go for it. For a gaming PC I'd personally wait a couple more months if I had the choice, although it seems fairly solid for the most part (GPU updates aside).