Not to be a jerk, but trying to escape coil whine is almost impossible at the high end and enthusiast tiers of GPU's. My 780's, 670's, 7950, 7970, 290s, 290x's, Fury/Fury X, 970s, and single 980 have all had some form of coil whine. Sure some are worse than others, but like I've explained in this thread and one or two others numerous times, there are WAY to many factors to solely blame one thing or the other.
Continuously buying cards in the hopes of getting a brand or make without coil whine isn't a good idea. If it really bothers someone that much, take the time to do the research as to why the phenomenon occurs and see what factors you can change to help reduce the issue; sound proofing, checking for dirty power in both the psu and house, make sure apartment/house is properly grounded, no large magnets near your pc, learning about the quality and make of chokes specific gpu models come with, how heat/voltage effect the frequency and pitch of the noise and finding optimal voltages within thermal tolerances that can help reduce the noise, and so on...
I personally got really hung-up over coil whine on one of my cards (cant remember specifically which one) and did ridiculous things, I even found the one socket in the whole damn house that wasn't grounded properly was the one my pc was running from and even worse that when the front foundation was exposed for waterproofing the workers never replaced the grounding rod for the entire house after digging out the old one
. Once I really invested myself into understanding why it was happening, it became clear there are so many things you cannot control that can influence coil whine. Long story short, don't burn yourself out over one thing.