Hey,
1) Only consider AMD if the total value justifies it (including motherboard).
2) Zen, 14nm is 8C/16T at first AFAIK. Not sure how long until quad-core. AMD is targeting the higher profit margin at first.
3) Driver/software support is also important. Unless the savings is worth it, just go with Intel as their stuff is pretty solid. That includes motherboard CHIPSET support.
4) Skylake and future Intel CPU's are also very fast at throttling down the core (Skylake can come out in 6ms). They also have a neat feature which I think is Skylake and later but can't remember where it can test to see what particular core overclocks the best (silicon lottery) then work with Windows to use the fastest core for the most important thread...