I have 2x Strix RX 470, best fans I've seen on GPU. No problem with drivers, but I have modded bios so I'm using the patch. I really like Strix.
Different story is Asus Dual, those cards are bad... they now start with Expedition edition, but it has the same noisy fans as Dual :/
I had an asus rx470 as well. Excellent card. If you aren't using both dvi ports, you can use a compatible rx580 bios to get around driver patching. Mine was hynix ajr and I used an msi 4gb rx580 ajr bios. I found that I got better undervolting stability with rx570/580 bioses vs stock (I'd have displays drop out randomly before).
edit: The asus rx570 bios works as well but still requires driver patching if modded.