Research into the top ten crypto deals in 2017 based on their ROIs has revealed that on average each returned over 136,000 percent according to Crypto Finance Conference analysts. Out of all the crypto projects that raised a minimum of one million in 2017, IOTA ($IOTA) clinched a staggering 614,934 percent ROI, sealing the top spot in the rankings, with the second place being NXT ($NXT) at 500,708 percent.