I own the E5-2678V3 paired with HuananZhi X99TF. This is a quality board with 10 layer PCB, 6 phase VRM power delivery and good chokes and caps. Has bootable NVME M.2 plus, another NVME m.2 slot, and an m.2 slot for the BT/WiFi card. There are 5 (LGA-2011-3 E5) Haswell's that support DDR3 or DDR4 and the X99TF provides choice with either 4xDDR3 slots (gray color) or 4 x DDR4 (black color), up to 64GB in either bank. It's sister motherboards are the X99T8 with 8xDDR3 slots and the X99F8 with 8xDDR4slots. I am very pleased with this motherboards quality, price and performance. Cheapest I have seen on AliExpress of late is around US$105.
http://www.huananzhi.com/html/1/184/185/362.html
There are AliExpress package combos with E5-2678V3 + 32GB REEC DDR3 1600 + X99TF that run about US$260 (plus shipping/duties/taxes).
MiyConst on Youtube has an excellent review of this MB (EN or RU). Also, his Turbo unlock and TU tools are excellent and easy to use. Took me 20 minutes to TU my platform. All core 3.3Ghz with CB R15 = 1824 , CB R20 = 3912. Cooling...a 6 pipe SNOWMAN (160W TDP rated) dual 120mm for $32 keeps mine below 60C with 21C ambient under full load conditions. P95 stress pushes it to 70C.