I had both, and at the beginning I don't like the win8, but after I added the win8 start menu then the win8 just likes the win7. You need short time to get used to it.
And I don't know Microsoft fits the wireless network problem or not because I use the powerline network adapter only if you need. So if you use the wireless network for the computer, printer, etc. You double check those before buy the win8, otherwise I recommend both.