With a lot of newer better cards does it make sense to spend $100 on another r-7 360 or wait and get a better card?
You'd be better off going for the SAPPHIRE NITRO+ Radeon RX 470 8GB (or the SAPPHIRE NITRO+ Radeon RX 470 4GB if you're gaming at 1920x1080). Not only does it have more power than dual R7 360s without suffering from the drawbacks of multiple GPUs, such as non linear scaling and possibility of zero scaling because the game doesn't support it, but it also will draw much less power (TDP 200w for dual 360s vs 100w for a RX 470), but I also see R7 360s selling for $75-$100 on eBay, which means you could buy an RX 470 and barely spend more than you would on a second new R7 360.
No don't buy another R7-360. You would be better to sell your R7 360 and purchase an RX470 or even better an RX480 if you can afford it.
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