Compared to previous versions, Windows 10 has much improved audio and midi handling although I think the application software has to be updated to use the new capabilities to take full advantage.

I updated from Win 7 to Win 10 when it was free and have had no real issues. Microsoft have stated that Windows 10 is going to be their last version of Windows and that it will be continuing updated. Admittedly their updates seem to be ******** huge.

If you want a fast Win10 system, you need 64 bit, 8 gig of RAM minimum, and as good an SSD as you can afford. Intel I7 if possible but I5 is pretty nippy these days. Do not succumb to someone selling a game spec machine with flash extras like top spec memory or a watercooled processor, you money is best spent on that SSD, the gamer spec may be 20% quicker but for 50% extra cost.
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John Allcock