Re: Prayers won't help
I haven't done an exhaustive analysis of Nvidia vs. AMD driver bugs, but I have tried various generations of AMD/ATI GPUs, including the HD4870, HD6450, HD7970 and R9 290X, and struggled to get my IBM T221 monitors working with all of them.
HD4870: Randomly switched left and right side of the monitor between reboots for no obvious reason. Had a very annoying rendering bug with transparency/water in several games including Supreme Commander where the shallows were always opaque. I kept persevering for about 6 months before I caved in and got an 8800GT which manifested no obvious problems.
HD6450: Passively cooled, worked great on Linux with the open source driver. It wasn't possible to configure custom modes / refresh rates in Windows. Only AMD GPU I still have.
HD7970: Only one of the DVI ports was dual-link, the other was single link. I needed either two dual link or two single link ports to run my monitors, so I couldn't get this working at all on either Windows or Linux. So I got rid of it and got a GTX680.
R9 290X: No XP drivers even though XP was still supported at the time, I don't recall what the binary Linux driver issues I had was off the top of my head, but open source driver didn't support it. Traded that in for a 780Ti.
Now, you cannot say that this is for lack of giving AMD's solution plenty of chances, but I always ended up with an Nvidia card in the end when I capitulated and needed something that "just works".
The only workable AMD based solutions are, in my experience, on Linux and only the ones that are a generation out of date and fully supported by the radeon open source driver.
Something that "just works" is far, far more important and valuable than chasing scores at the top end, especially since relatively few gamers do in fact buy top of the line cards because they are outrageously expensive.
The only reason why AMD had a good 2014 was because a lot of people were buying their cards for scrypt mining.