The stability issues have been fixed at AMD for years, once the AMD team took over from ATI who were always hit and miss when it came to driver releases. I've been using AMD exclusively since the HD 4850 (currently on the R9 280) and I honestly cannot remember the last time I had a graphics driver issue, now you are more likely to get a bad Windows patch than a bad GPU driver.
One thing I have to give them credit for is when they EOLed their ancient VLIW card line they made one last driver so that if you wanted to run newer versions of Windows, even Windows 10, then you can. I just wish Nvidia would have done the same as I have a ton of hardware at the shop that I couldn't lock in the Win 10 free upgrade for (just in case the customer might want Win 10 later) because there simply wasn't an nvidia driver that would function. But just to see if it worked I decided to lock in the upgrade with my netbook which has the AMD E-350 chip which has the very first gen APU the HD 6310, a really old chip, and....it worked perfectly fine.
So if you want a good GPU at a cheap price I'd say go for it. I'd get one myself but my R9 280 runs all the games I play at 60 FPS+ with all the bling cranked so I don't see a point ATM in upgrading but when it gets to the point that isn't the case? I'll get another AMD GPU.