Thanks Aphex,
I basically fell out of the loop when XP went to Vista. Had a friend who got W7 via the same route offer that I got with W10. I was leary of W7 so I missed out on a free W7 O/S. Got W7 with my new comp and found that I somewhat like it.
During Vista's trial...Folks found it impossible to revert back to XP.
I'd hate to get stuck in that rut. I'm sure they'd offer the capability of reverting back....But I'm sure you know that song and dance as well.
Guessing that's why it's a free offer.
I hate these decisions.
Edit*
Hear's a link that states that you can reserve a free copy for those how might be interestd. I think you have to click "yes" on the very first pop up. I didn't and got nowhere...Anyhow...
http://www.microsoft.com/en-US/windo...ows-10-upgrade