I am mining cryptonight and daggerhashimoto with the nicehash software bro. This is obviously profitable option to mine and get the profit according to the cards you are using for it. If you have the Nividia 1060 6GB cards for 5 numbers you will be able to get the profit around 450 USD per month. This is the calculation I am getting with the 5 cards but you may get the better hash rate with the 1070 cards or even more.
Mining with the CPU will not be suggestable option for the anyone, you cannot able to bear for the electricity alone with the CPU mining.

There's a good chance you're either being scammed or misled. No one is selling the cards you've listed for those prices right now anywhere. All GPUs come from the same factories in China and there's just not enough of them, most are bought by large farms pretty much straight from the factory and whatever crumbs are left go for very high prices to the retail. Just be careful and don't pay anyone in advance.

He is talking prices for second hand I'm fairly sure.  Its possible, I have seen prices that low but not many of them, maybe he just knows a repair shop or something.     The alternative is they arent fully tested which is risky.

I'd love to know where you can find those at those prices and actually available....if you are looking at nextwarehouse or asoola you'll get them in about 6 months if they even come.

RX480/580 is basically the same card but the 480 does better on power stock. If you can get an 8gb rx480 for $235 buy every one available...thats at/below msrp. RX570 has 4 less compute nodes (32 vs 36) but is the same polaris chipset as the 48/580 so its definately worth less than the others, but still viable at the price you posted.

1070 also a great card, can mine more than the nvidias and I find is more stable in windows after final 10 update than the radeons. Also a spectacular price at $285.

R9 295X2 is similar to the RX580, both of which are closer to 1060's, not 1070s.

Personally Id buy up all the 1070s first, then if I had money left over all the 480s. but unless you are buying used from somone that doesnt know what ebay is...I dont think those prices are real in todays market.

Cant speak on the VEGAs but I always build a triangle matrix when selecting cards that has cost, power and hashrate...lets just say the vega never even makes it on the top 10 list because its cost and power always lopside the triangle. CAST XMR will allow it to run 2kh/s for XMR/ETN which will help make the Vega great, but thats limited to really two main coins, only one of which is really profitable right now.

This usually happens when the wallet is not closed properly.
The solution is to delete everything from the C:\Users\YOURUSERNAME\AppData\Roaming\hug folder except the wallet.dat file.
Please make sure to keep a backup of wallet.dat.