I'm waiting on my Dr's office to get me my Surface Pro 128GB for "testing". Guess that's one benefit of not charging them anything - free appointments and goodies.Keep an open mind. I've been using Windows 8 since it was in Developer Preview.
It isn't a bad OS. Start Screen and touch features aside as I don't use them... Is it a different OS? Yep. Is it a better OS than 7? Probably not. But it definitely isn't bad.
I'm not saying 8.1 will be any better but it might be worth a try again.