The 980 is a bit faster than the 970 but that gap closes up a bit if you overclok the 970. I dont think the 980 is good value anymore the price to performance ratio doesn't make sense, i would go for a 980 ti if you can afford it or a 970, skip over the 980. The r9 390 is also a great choice its very comparable to the 970 and i think its the better card overall. FTW has a higher stock clock speed and maybe a more robust power delivery system for better overclocking, the superclocked version is a slightly lower clocked version of the FTW. I personally think the FTW cards are overpirced and pointless, the supercloked version will be just as fast if you just turn up the clock speed a bit.