Also. I heard PivX has solved a few problems that Dash was wrestling with. Could someone explain what problems they have solved that is different from Dash?
This is a great question and I'll do my best to answer it here.
Dash uses Masternode system which has grown to become quite expesnive. These leads to voting power being held by those with the most money which is truly a libertarian nightmare. In steps PivX to change this up with a simply yet awesome algorithm. PivX essentially incentives those with the biggest master nodes and most voting power incentives to give up their coins thus diversifying power. They also do not have a supply cap on their coin production which has been a critique of bitcoin for some time.